diff --git a/application/basilisk/components/nsBrowserGlue.js b/application/basilisk/components/nsBrowserGlue.js
index 6a39b38a1..7e45d494c 100644
--- a/application/basilisk/components/nsBrowserGlue.js
+++ b/application/basilisk/components/nsBrowserGlue.js
@@ -1075,7 +1075,7 @@ BrowserGlue.prototype = {
     // them to the user.
     let changedIDs = AddonManager.getStartupChanges(AddonManager.STARTUP_CHANGE_INSTALLED);
     if (changedIDs.length > 0) {
-      let win = this.getMostRecentBrowserWindow();
+      let win = RecentWindow.getMostRecentBrowserWindow();
       AddonManager.getAddonsByIDs(changedIDs, function(aAddons) {
         aAddons.forEach(function(aAddon) {
           // If the add-on isn't user disabled or can't be enabled then skip it.