diff --git a/tracker/index.js b/tracker/index.js
index 2fe6d28c..797b7f83 100644
--- a/tracker/index.js
+++ b/tracker/index.js
@@ -119,6 +119,8 @@
             return currentElement;
           }
           currentElement = currentElement.parentElement;
+          if (currentElement === null) // if there is no parent element 
+            return null;
         }
         return null;
       };