diff --git a/gtk/gtkmenubutton.c b/gtk/gtkmenubutton.c
index 2557609088..5130e35822 100644
--- a/gtk/gtkmenubutton.c
+++ b/gtk/gtkmenubutton.c
@@ -125,7 +125,7 @@ struct _GtkMenuButtonPrivate
   gpointer user_data;
 
   GtkWidget *align_widget;
-  gpointer arrow_widget;
+  GtkWidget *arrow_widget;
   GtkArrowType arrow_type;
   gboolean use_popover;
 };