diff --git a/src/settings/behavioursettingspage.cpp b/src/settings/behavioursettingspage.cpp
index 8114f601f..e1613a401 100644
--- a/src/settings/behavioursettingspage.cpp
+++ b/src/settings/behavioursettingspage.cpp
@@ -274,7 +274,7 @@ void BehaviourSettingsPage::Save() {
 
 }
 
-void BehaviourSettingsPage::ShowTrayIconToggled(bool on) {
+void BehaviourSettingsPage::ShowTrayIconToggled(const bool on) {
 
   ui_->radiobutton_hide->setEnabled(on);
   if (!on && ui_->radiobutton_hide->isChecked()) ui_->radiobutton_remember->setChecked(true);
diff --git a/src/settings/behavioursettingspage.h b/src/settings/behavioursettingspage.h
index 95129ec07..fa44bcfae 100644
--- a/src/settings/behavioursettingspage.h
+++ b/src/settings/behavioursettingspage.h
@@ -78,7 +78,7 @@ class BehaviourSettingsPage : public SettingsPage {
   void Save() override;
 
  private Q_SLOTS:
-  void ShowTrayIconToggled(bool on);
+  void ShowTrayIconToggled(const bool on);
 
  private:
   Ui_BehaviourSettingsPage *ui_;