diff --git a/mozilla/browser/components/microsummaries/src/nsMicrosummaryService.js b/mozilla/browser/components/microsummaries/src/nsMicrosummaryService.js
index 6544442ea8a..0901598b134 100644
--- a/mozilla/browser/components/microsummaries/src/nsMicrosummaryService.js
+++ b/mozilla/browser/components/microsummaries/src/nsMicrosummaryService.js
@@ -1978,7 +1978,7 @@ MicrosummaryResource.prototype = {
   get _httpAuthFailed()         { return this.__httpAuthFailed },
   set _httpAuthFailed(newValue) { this.__httpAuthFailed = newValue },
 
-  getAuthPrompt: function(aPromptReason) {
+  getAuthPrompt: function(aPromptReason, aIID) {
     this._httpAuthFailed = true;
     throw Components.results.NS_ERROR_NOT_AVAILABLE;
   },