diff --git a/vcg/complex/trimesh/halfedge_quad_clean.h b/vcg/complex/trimesh/halfedge_quad_clean.h
index b7755248..0d2c5198 100755
--- a/vcg/complex/trimesh/halfedge_quad_clean.h
+++ b/vcg/complex/trimesh/halfedge_quad_clean.h
@@ -296,9 +296,9 @@ namespace vcg
                     {
                         if( !((*fi).IsD()) )
                         {
-                            if( HalfEdgeTopology<MeshType>::is_singlet(&(*fi)) )
+                            if( HalfEdgeTopology<MeshType>::is_singlet_quad(&(*fi)) )
                             {
-                                HalfEdgeTopology<MeshType>::singlet_remove(m, &(*fi));
+                                HalfEdgeTopology<MeshType>::singlet_remove_quad(m, &(*fi));
                                 count++;
                             }
                         }
diff --git a/vcg/complex/trimesh/update/halfedge_topology.h b/vcg/complex/trimesh/update/halfedge_topology.h
index 80e28114..aaa6db69 100644
--- a/vcg/complex/trimesh/update/halfedge_topology.h
+++ b/vcg/complex/trimesh/update/halfedge_topology.h
@@ -1280,7 +1280,7 @@ namespace vcg
                 }
 
                 /*!
-                  * Checks if a vertex is non-manifold, ased only on local informations
+                  * Checks if a vertex is non-manifold, based only on local informations
                   *
                   * \param vp Vertex to check
                   *
@@ -1468,12 +1468,12 @@ namespace vcg
 
             protected:
                 /*!
-                  * Gets all edges incident to a face
+                  * Gets all hedges incident to a face
                   *
                   * \param fp Face
                   * \param starting_he A hedge in the face from which to start
                   *
-                  * \return Vector containing the incident edges
+                  * \return Vector containing the incident hedges
                   */
                 static vector<HEdgePointer> getHEdges(FacePointer fp, HEdgePointer starting_he = NULL)
                 {