diff --git a/gtk/gtkbuttonprivate.h b/gtk/gtkbuttonprivate.h
index 67ef99c5d4..069789a2d5 100644
--- a/gtk/gtkbuttonprivate.h
+++ b/gtk/gtkbuttonprivate.h
@@ -20,6 +20,7 @@
 #define __GTK_BUTTON_PRIVATE_H__
 
 #include "gtkactionhelper.h"
+#include "gtkgesturesingle.h"
 #include "deprecated/gtkaction.h"
 
 G_BEGIN_DECLS
@@ -36,6 +37,8 @@ struct _GtkButtonPrivate
 
   gchar                 *label_text;
 
+  GtkGesture            *gesture;
+
   gfloat                 xalign;
   gfloat                 yalign;