diff --git a/src/components/menubar/MenubarSub.vue b/src/components/menubar/MenubarSub.vue
index 8ed1375fe..bbeb3ea59 100644
--- a/src/components/menubar/MenubarSub.vue
+++ b/src/components/menubar/MenubarSub.vue
@@ -188,7 +188,7 @@ export default {
             }
             else {
                 //left
-                if (event.which === 37) {
+                if (event.originalEvent.which === 37) {
                     this.collapseMenu(event.element);
                 }
             }