diff --git a/Apollonius_graph_2/doc/Apollonius_graph_2/CGAL/Apollonius_graph_vertex_base_2.h b/Apollonius_graph_2/doc/Apollonius_graph_2/CGAL/Apollonius_graph_vertex_base_2.h
index c633618c7de..3bf702d3afd 100644
--- a/Apollonius_graph_2/doc/Apollonius_graph_2/CGAL/Apollonius_graph_vertex_base_2.h
+++ b/Apollonius_graph_2/doc/Apollonius_graph_2/CGAL/Apollonius_graph_vertex_base_2.h
@@ -29,7 +29,7 @@ instantiated by `Triangulation_ds_vertex_base_2<>`.
 \sa `CGAL::Triangulation_data_structure_2<Vb,Fb>`
 \sa `CGAL::Apollonius_graph_hierarchy_vertex_base_2<Gt>`
 */
-  template< typename Gt, typename StoreHidden, typename Vb >
+template< typename Gt, typename StoreHidden, typename Vb >
 class Apollonius_graph_vertex_base_2 : public Vb {
 public: