diff --git a/source/blender/editors/interface/interface_handlers.c b/source/blender/editors/interface/interface_handlers.c
index 222cce15f6f..b802098ff10 100644
--- a/source/blender/editors/interface/interface_handlers.c
+++ b/source/blender/editors/interface/interface_handlers.c
@@ -5238,8 +5238,15 @@ static int ui_handle_button_event(bContext *C, wmEvent *event, uiBut *but)
 		retval= WM_UI_HANDLER_CONTINUE;
 	}
 	else if(data->state == BUTTON_STATE_MENU_OPEN) {
+		/* check for exit because of mouse-over another button */
 		switch(event->type) {
-			case MOUSEMOVE: {
+			case MOUSEMOVE:
+				
+				if(data->menu && data->menu->region)
+					if(ui_mouse_inside_region(data->menu->region, event->x, event->y))
+						break;
+			
+			{
 				uiBut *bt= ui_but_find_mouse_over(ar, event->x, event->y);
 
 				if(bt && bt->active != data) {