diff --git a/dwm/config.def.h b/dwm/config.def.h
index 87d7457b7d05fb7999449fbf2d961d8baf5a4200..6ba495703e7b02b31d60beb313637ca1d45ad658 100644
--- a/dwm/config.def.h
+++ b/dwm/config.def.h
@@ -1,5 +1,5 @@
 /* See LICENSE file for copyright and license details. */
-
+#include <X11/XF86keysym.h>
 /* appearance */
 static const unsigned int borderpx  = 1;        /* border pixel of windows */
 static const unsigned int snap      = 32;       /* snap pixel */