diff --git a/demos/gtk-demo/fontplane.c b/demos/gtk-demo/fontplane.c
index 26f301d4fc..b7b07cb7ad 100644
--- a/demos/gtk-demo/fontplane.c
+++ b/demos/gtk-demo/fontplane.c
@@ -19,8 +19,6 @@
 
 #include "fontplane.h"
 
-#include "gtk.h"
-
 enum {
   PROP_0,
   PROP_WEIGHT_ADJUSTMENT,