diff --git a/src/Elements/Elements.es6 b/src/Elements/Elements.es6
index 1ef129b..6e32dfa 100644
--- a/src/Elements/Elements.es6
+++ b/src/Elements/Elements.es6
@@ -44,6 +44,8 @@ export default class Elements extends Tool
     }
     overrideEventTarget()
     {
+        if (!window.EventTarget) return;
+
         var winEventProto = window.EventTarget.prototype;
 
         var origAddEvent = this._origAddEvent = winEventProto.addEventListener,
@@ -63,6 +65,8 @@ export default class Elements extends Tool
     }
     restoreEventTarget()
     {
+        if (!window.EventTarget) return;
+
         var winEventProto = window.EventTarget.prototype;
 
         if (this._origAddEvent) winEventProto.addEventListener = this._origAddEvent;
diff --git a/test/index.html b/test/index.html
index 0520da4..41ce7fe 100644
--- a/test/index.html
+++ b/test/index.html
@@ -5,6 +5,12 @@
     <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
     <title>Eruda</title>
     <link rel="stylesheet" href="style.css">
+    <script>
+        alert(typeof window.EventTarget);
+        window.onerror = function (msg) {
+            alert(msg);
+        }
+    </script>
     <script src="../dist/eruda.js"></script>
     <script>eruda.init();</script>
 </head>