diff --git a/webshell/tests/viewer/nsViewerApp.cpp b/webshell/tests/viewer/nsViewerApp.cpp
index 76ac4c73d6e9..d9b5956ddfe2 100644
--- a/webshell/tests/viewer/nsViewerApp.cpp
+++ b/webshell/tests/viewer/nsViewerApp.cpp
@@ -230,7 +230,7 @@ nsViewerApp::Initialize(int argc, char** argv)
   if (NS_OK != rv) {
     return rv;
   }
-  mPrefs->Startup("prefs.js");
+  mPrefs->Startup(nsnull);
 
 
   // Load Fullcircle Talkback crash-reporting mechanism.
diff --git a/xpfe/bootstrap/nsAppRunner.cpp b/xpfe/bootstrap/nsAppRunner.cpp
index da4bd1914ac8..5f5ff90da2c5 100644
--- a/xpfe/bootstrap/nsAppRunner.cpp
+++ b/xpfe/bootstrap/nsAppRunner.cpp
@@ -132,7 +132,7 @@ int main(int argc, char* argv[])
   if (NS_FAILED(rv)) {
     goto done;
   }
-  prefs->Startup("prefs.js");
+  prefs->Startup(nsnull);
 
   /*
    * Start up the core services: