diff --git a/src/Mod/Sketcher/App/SketchObject.cpp b/src/Mod/Sketcher/App/SketchObject.cpp
index d7b299d9b..ec4cfa8c2 100644
--- a/src/Mod/Sketcher/App/SketchObject.cpp
+++ b/src/Mod/Sketcher/App/SketchObject.cpp
@@ -375,6 +375,23 @@ int SketchObject::toggleConstruction(int GeoId)
     return 0;
 }
 
+int SketchObject::setConstruction(int GeoId, bool on)
+{
+    const std::vector< Part::Geometry * > &vals = getInternalGeometry();
+    if (GeoId < 0 || GeoId >= int(vals.size()))
+        return -1;
+
+    std::vector< Part::Geometry * > newVals(vals);
+
+    Part::Geometry *geoNew = newVals[GeoId]->clone();
+    geoNew->Construction = on;
+    newVals[GeoId]=geoNew;
+
+    this->Geometry.setValues(newVals);
+    this->Constraints.acceptGeometry(getCompleteGeometry());
+    return 0;
+}
+
 int SketchObject::addConstraints(const std::vector<Constraint *> &ConstraintList)
 {
     return -1;
diff --git a/src/Mod/Sketcher/App/SketchObject.h b/src/Mod/Sketcher/App/SketchObject.h
index 0cd4af863..d77cd17d5 100644
--- a/src/Mod/Sketcher/App/SketchObject.h
+++ b/src/Mod/Sketcher/App/SketchObject.h
@@ -115,6 +115,7 @@ public:
 
     /// toggle geometry to draft line
     int toggleConstruction(int GeoId);
+    int setConstruction(int GeoId, bool on);
 
     /// create a fillet
     int fillet(int geoId, PointPos pos, double radius, bool trim=true);
diff --git a/src/Mod/Sketcher/App/SketchObjectPy.xml b/src/Mod/Sketcher/App/SketchObjectPy.xml
index e5b93b44e..41f035754 100644
--- a/src/Mod/Sketcher/App/SketchObjectPy.xml
+++ b/src/Mod/Sketcher/App/SketchObjectPy.xml
@@ -33,6 +33,11 @@
         <UserDocu>switch a geometry to a construcion line</UserDocu>
       </Documentation>
     </Methode>
+    <Methode Name="setConstruction">
+      <Documentation>
+        <UserDocu>set construction mode of a geometry on or off</UserDocu>
+      </Documentation>
+    </Methode>
     <Methode Name="addConstraint">
       <Documentation>
         <UserDocu>add a constraint to the sketch</UserDocu>
diff --git a/src/Mod/Sketcher/App/SketchObjectPyImp.cpp b/src/Mod/Sketcher/App/SketchObjectPyImp.cpp
index 1d0b5129f..474369479 100644
--- a/src/Mod/Sketcher/App/SketchObjectPyImp.cpp
+++ b/src/Mod/Sketcher/App/SketchObjectPyImp.cpp
@@ -99,6 +99,23 @@ PyObject* SketchObjectPy::toggleConstruction(PyObject *args)
     Py_Return;
 }
 
+PyObject* SketchObjectPy::setConstruction(PyObject *args)
+{
+    int Index;
+    PyObject *Mode;
+    if (!PyArg_ParseTuple(args, "iO!", &Index, &PyBool_Type, &Mode))
+        return 0;
+
+    if (this->getSketchObjectPtr()->setConstruction(Index, PyObject_IsTrue(Mode) ? true : false)) {
+        std::stringstream str;
+        str << "Not able to set construction mode of a geometry with the given index: " << Index;
+        PyErr_SetString(PyExc_ValueError, str.str().c_str());
+        return 0;
+    }
+
+    Py_Return;
+}
+
 PyObject* SketchObjectPy::addConstraint(PyObject *args)
 {
     PyObject *pcObj;