diff --git a/src/Mod/Sketcher/App/Sketch.cpp b/src/Mod/Sketcher/App/Sketch.cpp
index cb07cf54c8..ed9a595951 100644
--- a/src/Mod/Sketcher/App/Sketch.cpp
+++ b/src/Mod/Sketcher/App/Sketch.cpp
@@ -1093,7 +1093,7 @@ Py::Tuple Sketch::getPyGeometry(void) const
     return tuple;
 }
 
-int Sketch::checkGeoId(int geoId)
+int Sketch::checkGeoId(int geoId) const
 {
     if (geoId < 0)
         geoId += Geoms.size();//convert negative external-geometry index to index into Geoms
@@ -3608,7 +3608,7 @@ int Sketch::getPointId(int geoId, PointPos pos) const
     return -1;
 }
 
-Base::Vector3d Sketch::getPoint(int geoId, PointPos pos)
+Base::Vector3d Sketch::getPoint(int geoId, PointPos pos) const
 {
     geoId = checkGeoId(geoId);
     int pointId = getPointId(geoId, pos);
@@ -3618,12 +3618,12 @@ Base::Vector3d Sketch::getPoint(int geoId, PointPos pos)
     return Base::Vector3d();
 }
 
-bool Sketch::hasDependentParameters(int geoId, PointPos pos)
+bool Sketch::hasDependentParameters(int geoId, PointPos pos) const
 {
     try {
         geoId = checkGeoId(geoId);
     }
-    catch (Base::Exception e) {
+    catch (Base::Exception) {
         return false;
     }
 
diff --git a/src/Mod/Sketcher/App/Sketch.h b/src/Mod/Sketcher/App/Sketch.h
index 49c8d73999..6aa16056ff 100644
--- a/src/Mod/Sketcher/App/Sketch.h
+++ b/src/Mod/Sketcher/App/Sketch.h
@@ -94,10 +94,10 @@ public:
     /// retrieves the index of a point
     int getPointId(int geoId, PointPos pos) const;
     /// retrieves a point
-    Base::Vector3d getPoint(int geoId, PointPos pos);
-    
+    Base::Vector3d getPoint(int geoId, PointPos pos) const;
+
     /// retrieves whether a geometry has dependent parameters or not
-    bool hasDependentParameters(int geoId, PointPos pos);
+    bool hasDependentParameters(int geoId, PointPos pos) const;
 
     // Inline methods
     inline bool hasConflicts(void) const { return !Conflicting.empty(); }
@@ -460,7 +460,7 @@ private:
     void calculateDependentParametersElements(void);
 
     /// checks if the index bounds and converts negative indices to positive
-    int checkGeoId(int geoId);
+    int checkGeoId(int geoId) const;
     GCS::Curve* getGCSCurveByGeoId(int geoId);
 };