diff --git a/chrome/browser/ui/views/update_recommended_message_box.h b/chrome/browser/ui/views/update_recommended_message_box.h
index ccefd920a512d45ea556a653779e1244a81f9789..be507745c69eab93d9cceaa7f114c114a7042cae 100644
--- a/chrome/browser/ui/views/update_recommended_message_box.h
+++ b/chrome/browser/ui/views/update_recommended_message_box.h
@@ -24,6 +24,8 @@ class UpdateRecommendedMessageBox : public views::DialogDelegate {
       delete;
 
  private:
+  friend class UpdateRecommendedMessageBoxMac;
+
   UpdateRecommendedMessageBox();
   ~UpdateRecommendedMessageBox() override;