diff --git a/Straight_skeleton_2/doc/Straight_skeleton_2/Concepts/StraightSkeletonHalfedge_2.h b/Straight_skeleton_2/doc/Straight_skeleton_2/Concepts/StraightSkeletonHalfedge_2.h
index 7c1854eaf65..6e7b7e902da 100644
--- a/Straight_skeleton_2/doc/Straight_skeleton_2/Concepts/StraightSkeletonHalfedge_2.h
+++ b/Straight_skeleton_2/doc/Straight_skeleton_2/Concepts/StraightSkeletonHalfedge_2.h
@@ -44,10 +44,15 @@ StraightSkeletonHalfedge_2( int id );
 /// @{
 
 /*!
-The ID of the vertex
+returns the ID of the halfedge
 */
 int id() const;
 
+/*!
+resets the ID of the halfedge to `aID`
+*/
+void reset_id ( int aID );
+
 /*!
 returns the weight of the halfedge
 */