diff --git a/test/harness/gs.js b/test/harness/gs.js
index 0fad6625d399efa14ccc3e07849b7d475b73765f..18e75f8f1c1706c3addcaf5fde17e79d253127ef 100644
--- a/test/harness/gs.js
+++ b/test/harness/gs.js
@@ -22,7 +22,8 @@
 
 //An exception is expected
 if (testDescrip.negative !== undefined) {
-    testDescrip.negative = testDescrip.negative !== "" ? testDescrip.negative : ".";
+    //TODO - come up with a generic way of catching the error type from window.onerror
+    testDescrip.negative = testDescrip.negative === "NotEarlyError" ? testDescrip.negative : ".";
     if (window.iframeError === undefined) { //no exception was thrown
         testRun(testDescrip.id, testDescrip.path, testDescrip.description, testDescrip.code,
                 'fail',