diff --git a/Isosurfacing_3/include/CGAL/Dual_contouring_3.h b/Isosurfacing_3/include/CGAL/Dual_contouring_3.h
index d75ec176e4d..d55e81e34c9 100644
--- a/Isosurfacing_3/include/CGAL/Dual_contouring_3.h
+++ b/Isosurfacing_3/include/CGAL/Dual_contouring_3.h
@@ -56,10 +56,10 @@ void dual_contouring(const Domain_& domain, const typename Domain_::FT iso_value
     // static_assert(Domain_::CELL_TYPE & ANY_CELL);
 
     internal::Dual_contouring_vertex_positioning<Domain_, Positioning> pos_func(domain, iso_value, positioning);
-    domain.iterate_cells<Concurrency_tag>(pos_func);
+    domain.template iterate_cells<Concurrency_tag>(pos_func);
 
     internal::Dual_contouring_face_generation<Domain_> face_generation(domain, iso_value);
-    domain.iterate_edges<Concurrency_tag>(face_generation);
+    domain.template iterate_edges<Concurrency_tag>(face_generation);
 
     // write points and faces in ranges
     points.resize(pos_func.points_counter);
diff --git a/Isosurfacing_3/include/CGAL/Marching_cubes_3.h b/Isosurfacing_3/include/CGAL/Marching_cubes_3.h
index d3200b8148c..61de63f60f7 100644
--- a/Isosurfacing_3/include/CGAL/Marching_cubes_3.h
+++ b/Isosurfacing_3/include/CGAL/Marching_cubes_3.h
@@ -49,10 +49,10 @@ void marching_cubes(const Domain_& domain, const typename Domain_::FT iso_value,
 
     if (topologically_correct) {
         internal::TMC_functor<Domain_, PointRange, TriangleRange> functor(domain, iso_value, points, polygons);
-        domain.iterate_cells<Concurrency_tag>(functor);
+        domain.template iterate_cells<Concurrency_tag>(functor);
     } else {
         internal::Marching_cubes_functor<Domain_> functor(domain, iso_value);
-        domain.iterate_cells<Concurrency_tag>(functor);
+        domain.template iterate_cells<Concurrency_tag>(functor);
         internal::to_indexed_face_set(functor.get_triangles(), points, polygons);
     }
 }