diff --git a/app/settings/delegates/persistentmenu.h b/app/settings/delegates/persistentmenu.h
--- a/app/settings/delegates/persistentmenu.h
+++ b/app/settings/delegates/persistentmenu.h
@@ -28,7 +28,7 @@
 {
   Q_OBJECT
 public:
-  PersistentMenu(QWidget *parent);
+  PersistentMenu(QWidget *parent = 0);
 
 protected:
   void setVisible (bool visible) override;
diff --git a/app/settings/delegates/persistentmenu.cpp b/app/settings/delegates/persistentmenu.cpp
--- a/app/settings/delegates/persistentmenu.cpp
+++ b/app/settings/delegates/persistentmenu.cpp
@@ -20,7 +20,7 @@
 #include "persistentmenu.h"
 
 
-PersistentMenu::PersistentMenu(QWidget *parent = 0)
+PersistentMenu::PersistentMenu(QWidget *parent)
     : QMenu (parent),
       m_blockHide(false)
 {