diff --git a/js/tests/js1_5/extensions/regress-367121.js b/js/tests/js1_5/extensions/regress-367121.js
index 404796e9f68c..f3fcd0067f41 100755
--- a/js/tests/js1_5/extensions/regress-367121.js
+++ b/js/tests/js1_5/extensions/regress-367121.js
@@ -91,4 +91,7 @@ function handleLoad()
   jsTestDriverEnd();
 }
 
-window.onload = handleLoad;
+if (typeof window != 'undefined')
+{
+  window.onload = handleLoad;
+}