diff --git a/BGL/include/CGAL/boost/graph/graph_traits_TriMesh_ArrayKernelT.h b/BGL/include/CGAL/boost/graph/graph_traits_TriMesh_ArrayKernelT.h
index 7f0c3dab3b0..22de500ffc2 100644
--- a/BGL/include/CGAL/boost/graph/graph_traits_TriMesh_ArrayKernelT.h
+++ b/BGL/include/CGAL/boost/graph/graph_traits_TriMesh_ArrayKernelT.h
@@ -139,8 +139,8 @@ degree(typename boost::graph_traits<OpenMesh::TriMesh_ArrayKernelT<K> >::vertex_
 
 template <typename K>
 typename boost::graph_traits<OpenMesh::TriMesh_ArrayKernelT<K> >::degree_size_type
-degree(typename boost::graph_traits<OpenMesh::TriMesh_ArrayKernelT<K> >::face_descriptor f,
-       const OpenMesh::TriMesh_ArrayKernelT<K>& sm)
+degree(typename boost::graph_traits<OpenMesh::TriMesh_ArrayKernelT<K> >::face_descriptor,
+       const OpenMesh::TriMesh_ArrayKernelT<K>& )
 {
   return 3;
 }