diff --git a/rtgui/controlspotpanel.cc b/rtgui/controlspotpanel.cc
index ee0a07132..e4e71153f 100644
--- a/rtgui/controlspotpanel.cc
+++ b/rtgui/controlspotpanel.cc
@@ -1388,7 +1388,7 @@ CursorShape ControlSpotPanel::getCursor(int objectID)
     }
 }
 
-const bool ControlSpotPanel::mouseOver(int modifierKey)
+bool ControlSpotPanel::mouseOver(int modifierKey)
 {
     EditDataProvider* editProvider_ = getEditProvider();
     const auto s = treeview_.get_selection();
diff --git a/rtgui/controlspotpanel.h b/rtgui/controlspotpanel.h
index 7a0e2aa60..0c9e72d25 100644
--- a/rtgui/controlspotpanel.h
+++ b/rtgui/controlspotpanel.h
@@ -249,7 +249,7 @@ private:
     void updateControlSpotCurve(Gtk::TreeModel::Row row);
     void deleteControlSpotCurve(Gtk::TreeModel::Row row);
     CursorShape getCursor(int objectID);
-    const bool mouseOver(int modifierKey);
+    bool mouseOver(int modifierKey);
     bool button1Pressed(int modifierKey);
     bool button1Released();
     bool drag1(int modifierKey);