diff --git a/tests/Marker.html b/tests/Marker.html
index 77abc31285..fa9b598a43 100644
--- a/tests/Marker.html
+++ b/tests/Marker.html
@@ -94,8 +94,8 @@
         var marker = new OpenLayers.Marker(ll);
         mlayer.addMarker(marker);
 
-        t.ok(marker.icon.imageDiv.firstChild.src.contains("img/marker.png"), "Marker.png is default URL");
-        
+        t.ok(OpenLayers.String.contains(marker.icon.imageDiv.firstChild.src, "img/marker.png"), "Marker.png is default URL");
+
         marker.setUrl("http://example.com/broken.png");
         t.eq(marker.icon.imageDiv.firstChild.src, "http://example.com/broken.png", "image source changes correctly.");