diff --git a/source/blender/editors/space_buttons/buttons_ops.c b/source/blender/editors/space_buttons/buttons_ops.c
index 3ebb4c61f7b..7b59f6aafa9 100644
--- a/source/blender/editors/space_buttons/buttons_ops.c
+++ b/source/blender/editors/space_buttons/buttons_ops.c
@@ -38,6 +38,8 @@
 #include "WM_api.h"
 #include "WM_types.h"
 
+#include "ED_screen.h"
+
 #include "RNA_access.h"
 #include "RNA_define.h"
 
@@ -75,6 +77,7 @@ void BUTTONS_OT_toolbox(wmOperatorType *ot)
 	
 	/* api callbacks */
 	ot->invoke= toolbox_invoke;
+	ot->poll= ED_operator_buttons_active;
 }
 
 /********************** filebrowse operator *********************/