diff --git a/src/Mod/Part/App/Geometry.cpp b/src/Mod/Part/App/Geometry.cpp
index f8d2584ff2..8a9d8d61ac 100644
--- a/src/Mod/Part/App/Geometry.cpp
+++ b/src/Mod/Part/App/Geometry.cpp
@@ -1374,15 +1374,20 @@ bool GeomBSplineCurve::isPeriodic() const
     return myCurve->IsPeriodic()==Standard_True;
 }
 
+void GeomBSplineCurve::setPeriodic() const
+{
+    myCurve->SetPeriodic();
+}
+
 bool GeomBSplineCurve::isRational() const
 {
     return myCurve->IsRational()==Standard_True;
 }
 
-bool GeomBSplineCurve::join(const Handle(Geom_BSplineCurve)& spline)
+bool GeomBSplineCurve::join(const Handle(Geom_BoundedCurve)& other)
 {
     GeomConvert_CompCurveToBSplineCurve ccbc(this->myCurve);
-    if (!ccbc.Add(spline, Precision::Approximation()))
+    if (!ccbc.Add(other, Precision::Approximation()))
         return false;
     this->myCurve = ccbc.BSplineCurve();
     return true;
diff --git a/src/Mod/Part/App/Geometry.h b/src/Mod/Part/App/Geometry.h
index 31c81a515f..a8d3bb56b7 100644
--- a/src/Mod/Part/App/Geometry.h
+++ b/src/Mod/Part/App/Geometry.h
@@ -304,8 +304,9 @@ public:
     int getMultiplicity(int index) const;
     int getDegree() const;
     bool isPeriodic() const;
+    void setPeriodic() const;
     bool isRational() const;
-    bool join(const Handle(Geom_BSplineCurve)&);
+    bool join(const Handle(Geom_BoundedCurve)&);
     void makeC1Continuous(double, double);
     std::list<Geometry*> toBiArcs(double tolerance) const;