diff --git a/web/assets/js/util/utils.js b/web/assets/js/util/utils.js
index f0f99eb9..97d20082 100644
--- a/web/assets/js/util/utils.js
+++ b/web/assets/js/util/utils.js
@@ -177,7 +177,7 @@ class ObjectUtil {
                 }
             }
         } else {
-            return obj.toString().toLowerCase().indexOf(key.toLowerCase()) >= 0;
+            return this.isEmpty(obj) ? false : obj.toString().toLowerCase().indexOf(key.toLowerCase()) >= 0;
         }
         return false;
     }