diff --git a/mail/components/shell/nsMailGNOMEIntegration.cpp b/mail/components/shell/nsMailGNOMEIntegration.cpp
--- a/mail/components/shell/nsMailGNOMEIntegration.cpp
+++ b/mail/components/shell/nsMailGNOMEIntegration.cpp
@@ -93,16 +93,22 @@ nsMailGNOMEIntegration::Init()
   rv = NS_GetSpecialDirectory(NS_XPCOM_CURRENT_PROCESS_DIR,
                               getter_AddRefs(appPath));
   NS_ENSURE_SUCCESS(rv, rv);
 
   rv = appPath->AppendNative(NS_LITERAL_CSTRING(MOZ_APP_NAME));
   NS_ENSURE_SUCCESS(rv, rv);
 
   rv = appPath->GetNativePath(mAppPath);
+
+  /* This path of thunderbird is hardcoded for the default path setting
+   * And the above code is not used.
+   */
+  mAppPath.Assign ("/usr/bin/thunderbird");
+
   return rv;
 }
 
 NS_IMPL_ISUPPORTS1(nsMailGNOMEIntegration, nsIShellService)
 
 
 NS_IMETHODIMP
 nsMailGNOMEIntegration::IsDefaultClient(PRBool aStartupCheck, PRUint16 aApps, PRBool * aIsDefaultClient)