diff --git a/mozilla/suite/browser/navigator.js b/mozilla/suite/browser/navigator.js
index 1ca9e749042..c8f70a31899 100644
--- a/mozilla/suite/browser/navigator.js
+++ b/mozilla/suite/browser/navigator.js
@@ -406,8 +406,8 @@ function Startup()
     else
       setTimeout(WindowFocusTimerCallback, 0, gURLBar);
 
-    // Perform default browser checking.
-    checkForDefaultBrowser();
+    // Perform default browser checking (after window opens).
+    setTimeout( checkForDefaultBrowser, 0 );
 
     // hook up remote support
     if (XREMOTESERVICE_CONTRACTID in Components.classes) {