diff --git a/gui/mainwindow.h b/gui/mainwindow.h
index 144206870..2aec55a53 100644
--- a/gui/mainwindow.h
+++ b/gui/mainwindow.h
@@ -273,7 +273,7 @@ protected:
     * it.
     * @return true if we have project, false if no project.
     */
-    bool MainWindow::GetCheckProject();
+    bool GetCheckProject();
 
     /**
     * @brief Get our default cppcheck settings and read project file.