diff --git a/webshell/tests/viewer/nsBrowserWindow.cpp b/webshell/tests/viewer/nsBrowserWindow.cpp
index f1ca5aade6d4..0a84ee97806a 100644
--- a/webshell/tests/viewer/nsBrowserWindow.cpp
+++ b/webshell/tests/viewer/nsBrowserWindow.cpp
@@ -801,7 +801,6 @@ nsBrowserWindow::ForceRefresh()
       vm->GetRootView(root);
       if (nsnull != root) {
         vm->UpdateView(root, (nsIRegion*)nsnull, NS_VMREFRESH_IMMEDIATE |
-                                                 NS_VMREFRESH_SCREEN_RECT |
                                                  NS_VMREFRESH_AUTO_DOUBLE_BUFFER);
       }
       NS_RELEASE(vm);