diff --git a/Arrangement_on_surface_2/demo/Arrangement_on_surface_2/CurveInputMethods.cpp b/Arrangement_on_surface_2/demo/Arrangement_on_surface_2/CurveInputMethods.cpp
index 87908978b60..06ebae10a20 100644
--- a/Arrangement_on_surface_2/demo/Arrangement_on_surface_2/CurveInputMethods.cpp
+++ b/Arrangement_on_surface_2/demo/Arrangement_on_surface_2/CurveInputMethods.cpp
@@ -111,7 +111,7 @@ void CurveInputMethod::beginInput_()
 
 static inline void clearPainterPath(QPainterPath& ppath)
 {
-  ppath = {};
+  ppath.clear();
 }