diff --git a/Telegram/SourceFiles/iv/iv_delegate_impl.h b/Telegram/SourceFiles/iv/iv_delegate_impl.h
index f564f237a..8217d9438 100644
--- a/Telegram/SourceFiles/iv/iv_delegate_impl.h
+++ b/Telegram/SourceFiles/iv/iv_delegate_impl.h
@@ -19,9 +19,9 @@ public:
 	[[nodiscard]] QRect ivGeometry() const override;
 	void ivSaveGeometry(not_null<Ui::RpWindow*> window) override;
 
-	[[nodiscard]] int ivZoom() const;
-	[[nodiscard]] rpl::producer<int> ivZoomValue() const;
-	void ivSetZoom(int value);
+	[[nodiscard]] int ivZoom() const override;
+	[[nodiscard]] rpl::producer<int> ivZoomValue() const override;
+	void ivSetZoom(int value) override;
 
 private:
 	QPointer<QWidget> _lastSourceWindow;