diff --git a/dom/workers/test/errorPropagation_iframe.html b/dom/workers/test/errorPropagation_iframe.html
index c5f6884875c0..5c4a7962f35f 100644
--- a/dom/workers/test/errorPropagation_iframe.html
+++ b/dom/workers/test/errorPropagation_iframe.html
@@ -18,8 +18,8 @@
               type: "window",
               data: { message: message, filename: filename, lineno: lineno }
             });
-            return true;
           }
+          return false;
         };
 
         worker = new Worker("errorPropagation_worker.js");
diff --git a/dom/workers/test/test_errorPropagation.html b/dom/workers/test/test_errorPropagation.html
index 7e1aafe25d3b..c20dac94777e 100644
--- a/dom/workers/test/test_errorPropagation.html
+++ b/dom/workers/test/test_errorPropagation.html
@@ -36,6 +36,10 @@
         }
         else if (event.type == "window") {
           windowErrorCount++;
+          workerFrame.stop();
+          // do this via executeSoon to give the workers a chance to
+          // be cleaned up
+          SimpleTest.executeSoon(SimpleTest.endMonitorConsole);
         }
         else {
           ok(false, "Bad event type: " + event.type);
@@ -45,17 +49,27 @@
         is(event.data.filename, errorFilename,
            "Correct message event.filename");
         is(event.data.lineno, errorLineno, "Correct message event.lineno");
+      }
 
-        if (windowErrorCount == 1) {
-          is(scopeErrorCount, workerCount, "Good number of scope errors");
-          is(workerErrorCount, workerCount, "Good number of worker errors");
-          workerFrame.stop();
-          SimpleTest.finish();
-        }
+      function finish() {
+        is(scopeErrorCount, workerCount, "Good number of scope errors");
+        is(workerErrorCount, workerCount, "Good number of worker errors");
+        is(windowErrorCount, 1, "Good number of window errors");
+        SimpleTest.finish();
       }
 
       function workerFrameLoaded() {
         workerFrame = document.getElementById("workerFrame").contentWindow;
+
+        SimpleTest.monitorConsole(finish, [
+          { 'isScriptError': true,
+            'isWarning': false,
+            'isException': false,
+            'sourceName': errorFilename,
+            'lineNumber': errorLineno,
+            'errorMessage': errorMessage }
+        ]);
+
         workerFrame.start(workerCount, messageListener);
       }