diff --git a/openbox/focus.c b/openbox/focus.c
index 6f5b04d1..949a3291 100644
--- a/openbox/focus.c
+++ b/openbox/focus.c
@@ -1,5 +1,6 @@
 #include "event.h"
 #include "openbox.h"
+#include "grab.h"
 #include "framerender.h"
 #include "client.h"
 #include "config.h"