diff --git a/src/platform/CrossOrigin.coffee b/src/platform/CrossOrigin.coffee
index 57353b6e4..0af675612 100644
--- a/src/platform/CrossOrigin.coffee
+++ b/src/platform/CrossOrigin.coffee
@@ -128,7 +128,7 @@ CrossOrigin =
       onabort:   -> req.onloadend()
       ontimeout: -> req.onloadend()
     }
-    if typeof gmReq.abort is 'function'
+    if gmReq and typeof gmReq.abort is 'function'
       req.abort = ->
         try
           gmReq.abort()