diff --git a/Geo/discreteFace.h b/Geo/discreteFace.h
index ee911f6e76eefedef6e7da68e3d5a7716c31996a..7be63b40b7e8e647e482bea9ccdbc511b6dff40d 100644
--- a/Geo/discreteFace.h
+++ b/Geo/discreteFace.h
@@ -31,7 +31,7 @@ class discreteFace : public GFace {
   discreteFace(GModel *model, int num);
   virtual ~discreteFace() {}
   void checkAndFixOrientation();
-  void checkConnectivity(std::vector<std::vector<MElement*> >&);
+  //void checkConnectivity(std::vector<std::vector<MElement*> >&); undefined
   void setupDiscreteVertex(GVertex*,MVertex*,std::set<MVertex*>*);
   void setupDiscreteEdge(discreteEdge*,std::vector<MLine*>,std::set<MVertex*>*);
   void splitDiscreteEdge(GEdge*,GVertex*,discreteEdge*[2]);