diff --git a/mozilla/webshell/tests/viewer/nsViewerApp.cpp b/mozilla/webshell/tests/viewer/nsViewerApp.cpp
index 67a955071f1..9d90cd946d8 100644
--- a/mozilla/webshell/tests/viewer/nsViewerApp.cpp
+++ b/mozilla/webshell/tests/viewer/nsViewerApp.cpp
@@ -773,6 +773,8 @@ nsViewerApp::ViewSource(nsString& aURL)
   }
   bw->SetApp(this);
   bw->Init(mAppShell, nsRect(0, 0, 620, 400), PRUint32(~0), mAllowPlugins);
+  bw->mDocShell->SetViewMode(nsIDocShell::viewSource);
+  bw->SetTitle(L"View Source");
   bw->Show();
   bw->GoTo(aURL.GetUnicode(),"view-source");
   NS_RELEASE(bw);