diff --git a/src/app/tools/drawTools/vtoolsplinepath.cpp b/src/app/tools/drawTools/vtoolsplinepath.cpp
index 76da8fa15..961b70629 100644
--- a/src/app/tools/drawTools/vtoolsplinepath.cpp
+++ b/src/app/tools/drawTools/vtoolsplinepath.cpp
@@ -153,7 +153,7 @@ void VToolSplinePath::ControlPointChangePosition(const qint32 &indexSpline, cons
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-void VToolSplinePath::UpdateControlPoints(const VSpline &spl, VSplinePath &splPath, const qint32 &indexSpline)
+void VToolSplinePath::UpdateControlPoints(const VSpline &spl, VSplinePath &splPath, const qint32 &indexSpline) const
 {
     VSplinePoint p = splPath.GetSplinePoint(indexSpline, SplinePoint::FirstPoint);
     p.SetAngle2(spl.GetAngle1());
diff --git a/src/app/tools/drawTools/vtoolsplinepath.h b/src/app/tools/drawTools/vtoolsplinepath.h
index 8f802043c..2556bb41f 100644
--- a/src/app/tools/drawTools/vtoolsplinepath.h
+++ b/src/app/tools/drawTools/vtoolsplinepath.h
@@ -149,7 +149,7 @@ private:
      * @param splPath spline path.
      * @param indexSpline index spline in spline path.
      */
-    void             UpdateControlPoints(const VSpline &spl, VSplinePath &splPath, const qint32 &indexSpline);
+    void             UpdateControlPoints(const VSpline &spl, VSplinePath &splPath, const qint32 &indexSpline) const;
     void             RefreshSplinePath(VSplinePath &splPath);
 };