diff --git a/src/main.c b/src/main.c
index 9a7add8..539f7ff 100644
--- a/src/main.c
+++ b/src/main.c
@@ -17,6 +17,7 @@
 
 #include <unistd.h>
 #include <stdio.h>
+#include <gtk/gtk.h>
 #include "panel.h"