diff --git a/xpcom/base/ErrorList.h b/xpcom/base/ErrorList.h
index 2c149a9f4b9..c438ef68372 100644
--- a/xpcom/base/ErrorList.h
+++ b/xpcom/base/ErrorList.h
@@ -856,7 +856,7 @@
    * the application should be restarted.  This condition corresponds to the
    * case in which nsIAppStartup::Quit was called with the eRestart flag. */
   ERROR(NS_SUCCESS_RESTART_APP,          SUCCESS(1)),
-  ERROR(NS_SUCCESS_RESTART_METRO_APP,    SUCCESS(1)),
+  ERROR(NS_SUCCESS_RESTART_METRO_APP,    SUCCESS(2)),
   ERROR(NS_SUCCESS_UNORM_NOTFOUND,  SUCCESS(17)),