diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c
index 55df19ab..2b1604b3 100644
--- a/libdrm/xf86drm.c
+++ b/libdrm/xf86drm.c
@@ -38,6 +38,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
+#include <strings.h>
 #include <ctype.h>
 #include <fcntl.h>
 #include <errno.h>