diff --git a/Straight_skeleton_2/include/CGAL/Straight_skeleton_vertex_base_2.h b/Straight_skeleton_2/include/CGAL/Straight_skeleton_vertex_base_2.h
index 575b5577434..6cfc1b64480 100644
--- a/Straight_skeleton_2/include/CGAL/Straight_skeleton_vertex_base_2.h
+++ b/Straight_skeleton_2/include/CGAL/Straight_skeleton_vertex_base_2.h
@@ -263,7 +263,6 @@ private:
 
   int              mID ;
   Halfedge_handle  mHE ;
-  Triedge          mEventTriedge ;
   Trisegment_2_ptr mTrisegment ;
   Point_2          mP;
   FT               mTime ;