--- dwm.c
+++ dwm.c
@@ -272,6 +277,7 @@ static Display *dpy;
 static Drw *drw;
 static Monitor *mons, *selmon;
 static Window root, wmcheckwin;
+unsigned int currentkey = 0;
 
 /* configuration, allows nested code to access above variables */
 #include "config.h"