diff --git a/extras/keymap/keymap.c b/extras/keymap/keymap.c
index b565c33e2f..3f01d1953e 100644
--- a/extras/keymap/keymap.c
+++ b/extras/keymap/keymap.c
@@ -32,6 +32,7 @@
 #include <fcntl.h>
 #include <getopt.h>
 #include <sys/ioctl.h>
+#include <linux/limits.h>
 #include <linux/input.h>
 
 const struct key* lookup_key (const char *str, unsigned int len);