| Index: test/runner/browser/firefox_test.dart | 
| diff --git a/test/runner/browser/firefox_test.dart b/test/runner/browser/firefox_test.dart | 
| index 42b694d3319bc1b9368061a31329fb5fc4352ea6..526076ac7221c00e0a8a7223bb779ce8d2fc103b 100644 | 
| --- a/test/runner/browser/firefox_test.dart | 
| +++ b/test/runner/browser/firefox_test.dart | 
| @@ -150,7 +150,7 @@ webSocket.addEventListener("open", function() { | 
| var firefox = new Firefox("http://dart-lang.org", | 
| executable: "_does_not_exist"); | 
| expect(firefox.onExit, throwsA(isApplicationException(startsWith( | 
| -        "Failed to start Firefox: No such file or directory")))); | 
| +        "Failed to start Firefox: $noSuchFileMessage")))); | 
| }); | 
|  | 
| group("can run successful tests", () { | 
|  |