diff --git a/src/context.c b/src/context.c
index 1e28911..b283fc4 100644
--- a/src/context.c
+++ b/src/context.c
@@ -37,7 +37,7 @@ struct xkb_context {
     darray(char *) includes;
 
     /* xkbcomp needs to assign sequential IDs to XkbFile's it creates. */
-    int file_id;
+    unsigned file_id;
 
     struct atom_table *atom_table;
 };
@@ -144,7 +144,7 @@ xkb_context_include_path_get(struct xkb_context *ctx, unsigned int idx)
     return darray_item(ctx->includes, idx);
 }
 
-int
+unsigned
 xkb_context_take_file_id(struct xkb_context *ctx)
 {
     return ctx->file_id++;
diff --git a/src/xkb-priv.h b/src/xkb-priv.h
index bed35b1..b58ecc1 100644
--- a/src/xkb-priv.h
+++ b/src/xkb-priv.h
@@ -453,7 +453,7 @@ xkb_map_new_from_kccgst(struct xkb_context *ctx,
                         const struct xkb_component_names *kccgst,
                         enum xkb_map_compile_flags flags);
 
-extern int
+extern unsigned
 xkb_context_take_file_id(struct xkb_context *ctx);
 
 bool
diff --git a/src/xkbcomp/alias.c b/src/xkbcomp/alias.c
index c169656..3f09afe 100644
--- a/src/xkbcomp/alias.c
+++ b/src/xkbcomp/alias.c
@@ -32,7 +32,7 @@ HandleCollision(AliasInfo * old, AliasInfo * new)
 {
     if (strncmp(new->real, old->real, XkbKeyNameLength) == 0)
     {
-        if (((new->def.fileID == old->def.fileID) && (warningLevel > 0)) ||
+        if (((new->def.file_id == old->def.file_id) && (warningLevel > 0)) ||
             (warningLevel > 9))
         {
             WARN("Alias of %s for %s declared more than once\n",
@@ -53,7 +53,7 @@ HandleCollision(AliasInfo * old, AliasInfo * new)
             use = new->real;
             ignore = old->real;
         }
-        if (((old->def.fileID == new->def.fileID) && (warningLevel > 0)) ||
+        if (((old->def.file_id == new->def.file_id) && (warningLevel > 0)) ||
             (warningLevel > 9))
         {
             WARN("Multiple definitions for alias %s\n",
@@ -64,7 +64,7 @@ HandleCollision(AliasInfo * old, AliasInfo * new)
         if (use != old->real)
             memcpy(old->real, use, XkbKeyNameLength);
     }
-    old->def.fileID = new->def.fileID;
+    old->def.file_id = new->def.file_id;
     old->def.merge = new->def.merge;
 }
 
@@ -74,7 +74,7 @@ InitAliasInfo(AliasInfo * info,
 {
     memset(info, 0, sizeof(AliasInfo));
     info->def.merge = merge;
-    info->def.fileID = file_id;
+    info->def.file_id = file_id;
     strncpy(info->alias, alias, XkbKeyNameLength);
     strncpy(info->real, real, XkbKeyNameLength);
 }
@@ -101,7 +101,7 @@ HandleAliasDef(KeyAliasDef * def,
         WSGO("Allocation failure in HandleAliasDef\n");
         return false;
     }
-    info->def.fileID = file_id;
+    info->def.file_id = file_id;
     info->def.merge = merge;
     info->def.next = (CommonInfo *) * info_in;
     memcpy(info->alias, def->alias, XkbKeyNameLength);
@@ -140,7 +140,7 @@ MergeAliases(AliasInfo ** into, AliasInfo ** merge, unsigned how_merge)
             def.merge = how_merge;
         memcpy(def.alias, tmp->alias, XkbKeyNameLength);
         memcpy(def.real, tmp->real, XkbKeyNameLength);
-        if (!HandleAliasDef(&def, def.merge, tmp->def.fileID, into))
+        if (!HandleAliasDef(&def, def.merge, tmp->def.file_id, into))
             return false;
     }
     return true;
diff --git a/src/xkbcomp/compat.c b/src/xkbcomp/compat.c
index 99ed570..758014b 100644
--- a/src/xkbcomp/compat.c
+++ b/src/xkbcomp/compat.c
@@ -44,7 +44,7 @@ typedef struct _SymInterpInfo
 
 typedef struct _GroupCompatInfo
 {
-    unsigned char fileID;
+    unsigned file_id;
     unsigned char merge;
     bool defined;
     unsigned char real_mods;
@@ -54,7 +54,7 @@ typedef struct _GroupCompatInfo
 typedef struct _CompatInfo
 {
     char *name;
-    unsigned fileID;
+    unsigned file_id;
     int errorCount;
     int nInterps;
     SymInterpInfo *interps;
@@ -96,18 +96,18 @@ siText(SymInterpInfo * si, CompatInfo * info)
 }
 
 static void
-InitCompatInfo(CompatInfo *info, struct xkb_keymap *keymap)
+InitCompatInfo(CompatInfo *info, struct xkb_keymap *keymap, unsigned file_id)
 {
     unsigned int i;
 
     info->keymap = keymap;
     info->name = NULL;
-    info->fileID = 0;
+    info->file_id = file_id;
     info->errorCount = 0;
     info->nInterps = 0;
     info->interps = NULL;
     info->act = NULL;
-    info->dflt.defs.fileID = info->fileID;
+    info->dflt.defs.file_id = file_id;
     info->dflt.defs.defined = 0;
     info->dflt.defs.merge = MERGE_OVERRIDE;
     info->dflt.interp.flags = 0;
@@ -116,7 +116,7 @@ InitCompatInfo(CompatInfo *info, struct xkb_keymap *keymap)
     for (i = 0; i < sizeof(info->dflt.interp.act.any.data); i++)
         info->dflt.interp.act.any.data[i] = 0;
     ClearIndicatorMapInfo(keymap->ctx, &info->ledDflt);
-    info->ledDflt.defs.fileID = info->fileID;
+    info->ledDflt.defs.file_id = file_id;
     info->ledDflt.defs.defined = 0;
     info->ledDflt.defs.merge = MERGE_OVERRIDE;
     memset(&info->groupCompat[0], 0,
@@ -200,7 +200,7 @@ AddInterp(CompatInfo * info, SymInterpInfo * new)
         if (new->defs.merge == MERGE_REPLACE)
         {
             SymInterpInfo *next = (SymInterpInfo *) old->defs.next;
-            if (((old->defs.fileID == new->defs.fileID)
+            if (((old->defs.file_id == new->defs.file_id)
                  && (warningLevel > 0)) || (warningLevel > 9))
             {
                 WARN("Multiple definitions for \"%s\"\n", siText(new, info));
@@ -266,7 +266,7 @@ AddGroupCompat(CompatInfo * info, unsigned group, GroupCompatInfo * newGC)
     {
         return true;
     }
-    if (((gc->fileID == newGC->fileID) && (warningLevel > 0))
+    if (((gc->file_id == newGC->file_id) && (warningLevel > 0))
         || (warningLevel > 9))
     {
         WARN("Compat map for group %d redefined\n", group + 1);
@@ -407,12 +407,9 @@ HandleIncludeCompatMap(IncludeStmt *stmt, struct xkb_keymap *keymap,
     else if (ProcessIncludeFile(keymap->ctx, stmt, FILE_TYPE_COMPAT, &rtrn,
                                 &newMerge))
     {
-        InitCompatInfo(&included, keymap);
-        included.fileID = rtrn->id;
+        InitCompatInfo(&included, keymap, rtrn->id);
         included.dflt = info->dflt;
-        included.dflt.defs.fileID = rtrn->id;
         included.dflt.defs.merge = newMerge;
-        included.ledDflt.defs.fileID = rtrn->id;
         included.ledDflt.defs.merge = newMerge;
         included.act = info->act;
         HandleCompatMapFile(rtrn, keymap, MERGE_OVERRIDE, &included);
@@ -448,12 +445,12 @@ HandleIncludeCompatMap(IncludeStmt *stmt, struct xkb_keymap *keymap,
             else if (ProcessIncludeFile(keymap->ctx, next, FILE_TYPE_COMPAT,
                                         &rtrn, &op))
             {
-                InitCompatInfo(&next_incl, keymap);
-                next_incl.fileID = rtrn->id;
+                InitCompatInfo(&next_incl, keymap, rtrn->id);
+                next_incl.file_id = rtrn->id;
                 next_incl.dflt = info->dflt;
-                next_incl.dflt.defs.fileID = rtrn->id;
+                next_incl.dflt.defs.file_id = rtrn->id;
                 next_incl.dflt.defs.merge = op;
-                next_incl.ledDflt.defs.fileID = rtrn->id;
+                next_incl.ledDflt.defs.file_id = rtrn->id;
                 next_incl.ledDflt.defs.merge = op;
                 next_incl.act = info->act;
                 HandleCompatMapFile(rtrn, keymap, MERGE_OVERRIDE, &next_incl);
@@ -678,7 +675,7 @@ HandleGroupCompatDef(GroupCompatDef *def, struct xkb_keymap *keymap,
                 def->group);
         return false;
     }
-    tmp.fileID = info->fileID;
+    tmp.file_id = info->file_id;
     tmp.merge = merge;
     if (!ExprResolveVModMask(def->def, &val, keymap))
     {
@@ -785,7 +782,7 @@ CompileCompatMap(XkbFile *file, struct xkb_keymap *keymap, enum merge_mode merge
     CompatInfo info;
     GroupCompatInfo *gcm;
 
-    InitCompatInfo(&info, keymap);
+    InitCompatInfo(&info, keymap, file->id);
     info.dflt.defs.merge = merge;
     info.ledDflt.defs.merge = merge;
 
@@ -817,7 +814,7 @@ CompileCompatMap(XkbFile *file, struct xkb_keymap *keymap, enum merge_mode merge
     }
 
     for (i = 0, gcm = &info.groupCompat[0]; i < XkbNumKbdGroups; i++, gcm++) {
-        if ((gcm->fileID != 0) || (gcm->real_mods != 0) || (gcm->vmods != 0)) {
+        if ((gcm->file_id != 0) || (gcm->real_mods != 0) || (gcm->vmods != 0)) {
             keymap->compat->groups[i].mask = gcm->real_mods;
             keymap->compat->groups[i].real_mods = gcm->real_mods;
             keymap->compat->groups[i].vmods = gcm->vmods;
diff --git a/src/xkbcomp/indicators.c b/src/xkbcomp/indicators.c
index 41b3649..060ed46 100644
--- a/src/xkbcomp/indicators.c
+++ b/src/xkbcomp/indicators.c
@@ -74,7 +74,7 @@ AddIndicatorMap(struct xkb_keymap *keymap, LEDInfo *oldLEDs, LEDInfo *new)
             if (new->defs.merge == MERGE_REPLACE)
             {
                 CommonInfo *next = old->defs.next;
-                if (((old->defs.fileID == new->defs.fileID)
+                if (((old->defs.file_id == new->defs.file_id)
                      && (warningLevel > 0)) || (warningLevel > 9))
                 {
                     WARN("Map for indicator %s redefined\n",
diff --git a/src/xkbcomp/keycodes.c b/src/xkbcomp/keycodes.c
index 449825b..8751021 100644
--- a/src/xkbcomp/keycodes.c
+++ b/src/xkbcomp/keycodes.c
@@ -63,7 +63,7 @@ typedef struct _KeyNamesInfo
 {
     char *name;     /* e.g. evdev+aliases(qwerty) */
     int errorCount;
-    unsigned fileID;
+    unsigned file_id;
     enum merge_mode merge;
     xkb_keycode_t computedMin; /* lowest keycode stored */
     xkb_keycode_t computedMax; /* highest keycode stored */
@@ -93,7 +93,7 @@ InitIndicatorNameInfo(IndicatorNameInfo * ii, KeyNamesInfo * info)
 {
     ii->defs.defined = 0;
     ii->defs.merge = info->merge;
-    ii->defs.fileID = info->fileID;
+    ii->defs.file_id = info->file_id;
     ii->defs.next = NULL;
     ii->ndx = 0;
     ii->name = XKB_ATOM_NONE;
@@ -163,7 +163,7 @@ AddIndicatorName(KeyNamesInfo *info, struct xkb_keymap *keymap, enum merge_mode
     old = FindIndicatorByName(info, new->name);
     if (old)
     {
-        if (((old->defs.fileID == new->defs.fileID) && (warningLevel > 0))
+        if (((old->defs.file_id == new->defs.file_id) && (warningLevel > 0))
             || (warningLevel > 9))
         {
             WARN("Multiple indicators named %s\n",
@@ -216,7 +216,7 @@ AddIndicatorName(KeyNamesInfo *info, struct xkb_keymap *keymap, enum merge_mode
     old = FindIndicatorByIndex(info, new->ndx);
     if (old)
     {
-        if (((old->defs.fileID == new->defs.fileID) && (warningLevel > 0))
+        if (((old->defs.file_id == new->defs.file_id) && (warningLevel > 0))
             || (warningLevel > 9))
         {
             WARN("Multiple names for indicator %d\n", new->ndx);
@@ -286,11 +286,12 @@ ClearKeyNamesInfo(KeyNamesInfo * info)
 }
 
 static void
-InitKeyNamesInfo(KeyNamesInfo * info)
+InitKeyNamesInfo(KeyNamesInfo * info, unsigned file_id)
 {
     info->name = NULL;
     info->leds = NULL;
     info->aliases = NULL;
+    info->file_id = file_id;
     darray_init(info->names);
     darray_init(info->files);
     ClearKeyNamesInfo(info);
@@ -316,8 +317,8 @@ FindKeyByLong(KeyNamesInfo * info, unsigned long name)
  */
 static bool
 AddKeyName(KeyNamesInfo * info,
-           xkb_keycode_t kc,
-           char *name, enum merge_mode merge, unsigned fileID, bool reportCollisions)
+           xkb_keycode_t kc, char *name, enum merge_mode merge,
+           unsigned file_id, bool reportCollisions)
 {
     xkb_keycode_t old;
     unsigned long lval;
@@ -334,7 +335,7 @@ AddKeyName(KeyNamesInfo * info,
     {
         reportCollisions = (warningLevel > 7 ||
                             (warningLevel > 0 &&
-                             fileID == darray_item(info->files, kc)));
+                             file_id == darray_item(info->files, kc)));
     }
 
     if (darray_item(info->names, kc) != 0)
@@ -394,7 +395,7 @@ AddKeyName(KeyNamesInfo * info,
         }
     }
     darray_item(info->names, kc) = lval;
-    darray_item(info->files, kc) = fileID;
+    darray_item(info->files, kc) = file_id;
     return true;
 }
 
@@ -426,7 +427,7 @@ MergeIncludedKeycodes(KeyNamesInfo *into, struct xkb_keymap *keymap,
             continue;
         LongToKeyName(darray_item(from->names, i), buf);
         buf[4] = '\0';
-        if (!AddKeyName(into, i, buf, merge, from->fileID, false))
+        if (!AddKeyName(into, i, buf, merge, from->file_id, false))
             into->errorCount++;
     }
     if (from->leds)
@@ -492,7 +493,7 @@ HandleIncludeKeycodes(IncludeStmt *stmt, struct xkb_keymap *keymap,
     else if (ProcessIncludeFile(keymap->ctx, stmt, FILE_TYPE_KEYCODES, &rtrn,
                                 &newMerge))
     {
-        InitKeyNamesInfo(&included);
+        InitKeyNamesInfo(&included, rtrn->id);
         HandleKeycodesFile(rtrn, keymap, MERGE_OVERRIDE, &included);
         if (stmt->stmt != NULL)
         {
@@ -525,7 +526,7 @@ HandleIncludeKeycodes(IncludeStmt *stmt, struct xkb_keymap *keymap,
             else if (ProcessIncludeFile(keymap->ctx, next, FILE_TYPE_KEYCODES,
                                         &rtrn, &op))
             {
-                InitKeyNamesInfo(&next_incl);
+                InitKeyNamesInfo(&next_incl, rtrn->id);
                 HandleKeycodesFile(rtrn, keymap, MERGE_OVERRIDE, &next_incl);
                 MergeIncludedKeycodes(&included, keymap, &next_incl, op);
                 ClearKeyNamesInfo(&next_incl);
@@ -572,7 +573,7 @@ HandleKeycodeDef(KeycodeDef *stmt, enum merge_mode merge, KeyNamesInfo *info)
         else
             merge = stmt->merge;
     }
-    return AddKeyName(info, stmt->value, stmt->name, merge, info->fileID,
+    return AddKeyName(info, stmt->value, stmt->name, merge, info->file_id,
                       true);
 }
 
@@ -745,7 +746,7 @@ HandleKeycodesFile(XkbFile *file, struct xkb_keymap *keymap,
                 info->errorCount++;
             break;
         case StmtKeyAliasDef: /* e.g. alias <MENU> = <COMP>; */
-            if (!HandleAliasDef((KeyAliasDef *) stmt, merge, info->fileID,
+            if (!HandleAliasDef((KeyAliasDef *) stmt, merge, info->file_id,
                                 &info->aliases))
                 info->errorCount++;
             break;
@@ -799,7 +800,7 @@ CompileKeycodes(XkbFile *file, struct xkb_keymap *keymap, enum merge_mode merge)
 {
     KeyNamesInfo info; /* contains all the info after parsing */
 
-    InitKeyNamesInfo(&info);
+    InitKeyNamesInfo(&info, file->id);
 
     HandleKeycodesFile(file, keymap, merge, &info);
 
diff --git a/src/xkbcomp/keytypes.c b/src/xkbcomp/keytypes.c
index c38ac4f..6f83d34 100644
--- a/src/xkbcomp/keytypes.c
+++ b/src/xkbcomp/keytypes.c
@@ -48,7 +48,7 @@ typedef struct _KeyTypeInfo
 {
     CommonInfo defs;
     xkb_atom_t name;
-    int fileID;
+    unsigned file_id;
     unsigned mask;
     unsigned vmask;
     bool groupInfo;
@@ -62,7 +62,7 @@ typedef struct _KeyTypesInfo
 {
     char *name;
     int errorCount;
-    int fileID;
+    unsigned file_id;
     unsigned stdPresent;
     unsigned nTypes;
     KeyTypeInfo *types;
@@ -99,7 +99,7 @@ static xkb_atom_t tok_KEYPAD;
 
 static void
 InitKeyTypesInfo(KeyTypesInfo *info, struct xkb_keymap *keymap,
-                 KeyTypesInfo *from)
+                 KeyTypesInfo *from, unsigned file_id)
 {
     tok_ONE_LEVEL = xkb_atom_intern(keymap->ctx, "ONE_LEVEL");
     tok_TWO_LEVEL = xkb_atom_intern(keymap->ctx, "TWO_LEVEL");
@@ -110,8 +110,9 @@ InitKeyTypesInfo(KeyTypesInfo *info, struct xkb_keymap *keymap,
     info->stdPresent = 0;
     info->nTypes = 0;
     info->types = NULL;
+    info->file_id = file_id;
     info->dflt.defs.defined = 0;
-    info->dflt.defs.fileID = 0;
+    info->dflt.defs.file_id = file_id;
     info->dflt.defs.merge = MERGE_OVERRIDE;
     info->dflt.defs.next = NULL;
     info->dflt.name = XKB_ATOM_NONE;
@@ -190,7 +191,7 @@ NextKeyType(KeyTypesInfo * info)
     if (type != NULL)
     {
         memset(type, 0, sizeof(KeyTypeInfo));
-        type->defs.fileID = info->fileID;
+        type->defs.file_id = info->file_id;
         info->types = AddCommonInfo(&info->types->defs, &type->defs);
         info->nTypes++;
     }
@@ -262,7 +263,7 @@ AddKeyType(struct xkb_keymap *keymap, KeyTypesInfo *info, KeyTypeInfo *new)
             || (new->defs.merge == MERGE_OVERRIDE))
         {
             KeyTypeInfo *next = (KeyTypeInfo *) old->defs.next;
-            if (((old->defs.fileID == new->defs.fileID)
+            if (((old->defs.file_id == new->defs.file_id)
                  && (warningLevel > 0)) || (warningLevel > 9))
             {
                 WARN("Multiple definitions of the %s key type\n",
@@ -277,7 +278,7 @@ AddKeyType(struct xkb_keymap *keymap, KeyTypesInfo *info, KeyTypeInfo *new)
             old->defs.next = &next->defs;
             return true;
         }
-        report = (old->defs.fileID == new->defs.fileID) && (warningLevel > 0);
+        report = (old->defs.file_id == new->defs.file_id) && (warningLevel > 0);
         if (report)
         {
             WARN("Multiple definitions of the %s key type\n",
@@ -349,8 +350,7 @@ HandleIncludeKeyTypes(IncludeStmt *stmt, struct xkb_keymap *keymap,
     else if (ProcessIncludeFile(keymap->ctx, stmt, FILE_TYPE_TYPES, &rtrn,
                                 &newMerge))
     {
-        InitKeyTypesInfo(&included, keymap, info);
-        included.fileID = included.dflt.defs.fileID = rtrn->id;
+        InitKeyTypesInfo(&included, keymap, info, rtrn->id);
         included.dflt.defs.merge = newMerge;
 
         HandleKeyTypesFile(rtrn, keymap, newMerge, &included);
@@ -384,8 +384,7 @@ HandleIncludeKeyTypes(IncludeStmt *stmt, struct xkb_keymap *keymap,
             else if (ProcessIncludeFile(keymap->ctx, next, FILE_TYPE_TYPES,
                                         &rtrn, &op))
             {
-                InitKeyTypesInfo(&next_incl, keymap, &included);
-                next_incl.fileID = next_incl.dflt.defs.fileID = rtrn->id;
+                InitKeyTypesInfo(&next_incl, keymap, &included, rtrn->id);
                 next_incl.dflt.defs.merge = op;
                 HandleKeyTypesFile(rtrn, keymap, op, &next_incl);
                 MergeIncludedKeyTypes(&included, &next_incl, op, keymap);
@@ -857,7 +856,7 @@ HandleKeyTypeDef(KeyTypeDef *def, struct xkb_keymap *keymap,
         merge = def->merge;
 
     type.defs.defined = 0;
-    type.defs.fileID = info->fileID;
+    type.defs.file_id = info->file_id;
     type.defs.merge = merge;
     type.defs.next = NULL;
     type.name = def->name;
@@ -1218,8 +1217,7 @@ CompileKeyTypes(XkbFile *file, struct xkb_keymap *keymap, enum merge_mode merge)
     KeyTypesInfo info;
     KeyTypeInfo *def;
 
-    InitKeyTypesInfo(&info, keymap, NULL);
-    info.fileID = file->id;
+    InitKeyTypesInfo(&info, keymap, NULL, file->id);
 
     HandleKeyTypesFile(file, keymap, merge, &info);
 
diff --git a/src/xkbcomp/misc.c b/src/xkbcomp/misc.c
index 3fcceb1..7f95df2 100644
--- a/src/xkbcomp/misc.c
+++ b/src/xkbcomp/misc.c
@@ -164,7 +164,7 @@ UseNewField(unsigned field,
     {
         if (newDefs->defined & field)
         {
-            if (((oldDefs->fileID == newDefs->fileID)
+            if (((oldDefs->file_id == newDefs->file_id)
                  && (warningLevel > 0)) || (warningLevel > 9))
             {
                 *pCollide |= field;
diff --git a/src/xkbcomp/symbols.c b/src/xkbcomp/symbols.c
index 5d6ad33..ab7f224 100644
--- a/src/xkbcomp/symbols.c
+++ b/src/xkbcomp/symbols.c
@@ -90,13 +90,13 @@ typedef struct _KeyInfo
  * Init the given key info to sane values.
  */
 static void
-InitKeyInfo(KeyInfo * info)
+InitKeyInfo(KeyInfo * info, unsigned file_id)
 {
     int i;
     static const char dflt[4] = "*";
 
     info->defs.defined = 0;
-    info->defs.fileID = 0;
+    info->defs.file_id = file_id;
     info->defs.merge = MERGE_OVERRIDE;
     info->defs.next = NULL;
     info->name = KeyNameToLong(dflt);
@@ -127,7 +127,7 @@ FreeKeyInfo(KeyInfo * info)
     int i;
 
     info->defs.defined = 0;
-    info->defs.fileID = 0;
+    info->defs.file_id = 0;
     info->defs.merge = MERGE_OVERRIDE;
     info->defs.next = NULL;
     info->groupInfo = 0;
@@ -200,7 +200,7 @@ typedef struct _SymbolsInfo
 {
     char *name;         /* e.g. pc+us+inet(evdev) */
     int errorCount;
-    unsigned fileID;
+    unsigned file_id;
     enum merge_mode merge;
     unsigned explicit_group;
     darray(KeyInfo) keys;
@@ -214,21 +214,22 @@ typedef struct _SymbolsInfo
 } SymbolsInfo;
 
 static void
-InitSymbolsInfo(SymbolsInfo * info, struct xkb_keymap *keymap)
+InitSymbolsInfo(SymbolsInfo * info, struct xkb_keymap *keymap,
+                unsigned file_id)
 {
     int i;
 
     info->name = NULL;
     info->explicit_group = 0;
     info->errorCount = 0;
-    info->fileID = 0;
+    info->file_id = file_id;
     info->merge = MERGE_OVERRIDE;
     darray_init(info->keys);
     darray_growalloc(info->keys, 110);
     info->modMap = NULL;
     for (i = 0; i < XkbNumKbdGroups; i++)
         info->groupNames[i] = XKB_ATOM_NONE;
-    InitKeyInfo(&info->dflt);
+    InitKeyInfo(&info->dflt, file_id);
     InitVModInfo(&info->vmods, keymap);
     info->action = NULL;
     info->aliases = NULL;
@@ -303,7 +304,7 @@ MergeKeyGroups(SymbolsInfo * info,
     clobber = (from->defs.merge != MERGE_AUGMENT);
 
     report = (warningLevel > 9) ||
-        ((into->defs.fileID == from->defs.fileID) && (warningLevel > 0));
+        ((into->defs.file_id == from->defs.file_id) && (warningLevel > 0));
 
     darray_init(resultSyms);
 
@@ -533,7 +534,7 @@ MergeKeys(SymbolsInfo *info, struct xkb_keymap *keymap,
         return true;
     }
     report = ((warningLevel > 9) ||
-              ((into->defs.fileID == from->defs.fileID)
+              ((into->defs.file_id == from->defs.file_id)
                && (warningLevel > 0)));
     for (i = 0; i < XkbNumKbdGroups; i++)
     {
@@ -809,8 +810,7 @@ HandleIncludeSymbols(IncludeStmt *stmt, struct xkb_keymap *keymap,
     else if (ProcessIncludeFile(keymap->ctx, stmt, FILE_TYPE_SYMBOLS, &rtrn,
                                 &newMerge))
     {
-        InitSymbolsInfo(&included, keymap);
-        included.fileID = included.dflt.defs.fileID = rtrn->id;
+        InitSymbolsInfo(&included, keymap, rtrn->id);
         included.merge = included.dflt.defs.merge = MERGE_OVERRIDE;
         if (stmt->modifier)
         {
@@ -851,8 +851,7 @@ HandleIncludeSymbols(IncludeStmt *stmt, struct xkb_keymap *keymap,
             else if (ProcessIncludeFile(keymap->ctx, next, FILE_TYPE_SYMBOLS,
                                         &rtrn, &op))
             {
-                InitSymbolsInfo(&next_incl, keymap);
-                next_incl.fileID = next_incl.dflt.defs.fileID = rtrn->id;
+                InitSymbolsInfo(&next_incl, keymap, rtrn->id);
                 next_incl.merge = next_incl.dflt.defs.merge = MERGE_OVERRIDE;
                 if (next->modifier)
                 {
@@ -1433,7 +1432,7 @@ HandleSymbolsDef(SymbolsDef *stmt, struct xkb_keymap *keymap,
 {
     KeyInfo key;
 
-    InitKeyInfo(&key);
+    InitKeyInfo(&key, info->file_id);
     CopyKeyInfo(&info->dflt, &key, false);
     key.defs.merge = stmt->merge;
     key.name = KeyNameToLong(stmt->keyName);
@@ -2086,8 +2085,7 @@ CompileSymbols(XkbFile *file, struct xkb_keymap *keymap, enum merge_mode merge)
     SymbolsInfo info;
     KeyInfo *key;
 
-    InitSymbolsInfo(&info, keymap);
-    info.dflt.defs.fileID = file->id;
+    InitSymbolsInfo(&info, keymap, file->id);
     info.dflt.defs.merge = merge;
 
     HandleSymbolsFile(file, keymap, merge, &info);
diff --git a/src/xkbcomp/xkbcomp-priv.h b/src/xkbcomp/xkbcomp-priv.h
index 35d59d4..c7d771a 100644
--- a/src/xkbcomp/xkbcomp-priv.h
+++ b/src/xkbcomp/xkbcomp-priv.h
@@ -35,7 +35,7 @@
 typedef struct _CommonInfo
 {
     unsigned short defined;
-    unsigned char fileID;
+    unsigned file_id;
     unsigned char merge;
     struct _CommonInfo *next;
 } CommonInfo;