diff --git a/src/atom.c b/src/atom.c
index bdcd205..4f8b089 100644
--- a/src/atom.c
+++ b/src/atom.c
@@ -93,6 +93,8 @@ atom_table_new(void)
     if (!table)
         return NULL;
 
+    darray_init(table->table);
+    darray_growalloc(table->table, 100);
     darray_append(table->table, NULL);
 
     return table;
diff --git a/src/darray.h b/src/darray.h
index 6c21bbf..2547b47 100644
--- a/src/darray.h
+++ b/src/darray.h
@@ -280,7 +280,7 @@ typedef darray(unsigned long)  darray_ulong;
 static inline size_t darray_next_alloc(size_t alloc, size_t need)
 {
 	if (alloc == 0)
-		alloc = 1;
+		alloc = 4;
 	while (alloc < need)
 		alloc *= 2;
 	return alloc;
diff --git a/src/xkbcomp/rules.c b/src/xkbcomp/rules.c
index 14c3c68..244701d 100644
--- a/src/xkbcomp/rules.c
+++ b/src/xkbcomp/rules.c
@@ -992,10 +992,13 @@ load_rules(FILE *file)
     rules = calloc(1, sizeof(*rules));
     if (!rules)
         return NULL;
+    darray_init(rules->rules);
+    darray_growalloc(rules->rules, 16);
 
     memset(&mapping, 0, sizeof(mapping));
     memset(&tgroup, 0, sizeof(tgroup));
     darray_init(line);
+    darray_growalloc(line, 128);
 
     while (input_line_get(file, &line)) {
         if (match_line(&line, &mapping, &trule, &tgroup)) {
diff --git a/src/xkbcomp/symbols.c b/src/xkbcomp/symbols.c
index a61a52b..823223d 100644
--- a/src/xkbcomp/symbols.c
+++ b/src/xkbcomp/symbols.c
@@ -256,8 +256,6 @@ typedef struct _ModMapEntry
     } u;
 } ModMapEntry;
 
-#define SYMBOLS_INIT_SIZE 110
-
 typedef struct _SymbolsInfo
 {
     char *name;         /* e.g. pc+us+inet(evdev) */
@@ -286,7 +284,7 @@ InitSymbolsInfo(SymbolsInfo * info, struct xkb_keymap *keymap)
     info->fileID = 0;
     info->merge = MergeOverride;
     darray_init(info->keys);
-    darray_growalloc(info->keys, SYMBOLS_INIT_SIZE);
+    darray_growalloc(info->keys, 110);
     info->modMap = NULL;
     for (i = 0; i < XkbNumKbdGroups; i++)
         info->groupNames[i] = XKB_ATOM_NONE;