diff --git a/BGL/include/CGAL/boost/graph/IO/PLY.h b/BGL/include/CGAL/boost/graph/IO/PLY.h
index 6d16eaee686..406bf87c603 100644
--- a/BGL/include/CGAL/boost/graph/IO/PLY.h
+++ b/BGL/include/CGAL/boost/graph/IO/PLY.h
@@ -370,11 +370,15 @@ bool write_PLY(std::ostream& os,
 
   bool has_vcolor = !is_default_parameter<CGAL_NP_CLASS, internal_np::vertex_color_map_t>::value;
   bool has_fcolor = !is_default_parameter<CGAL_NP_CLASS, internal_np::face_color_map_t>::value;
-  bool has_vnormal = false;
+  bool has_vnormal;
   if constexpr (!parameters::is_default_parameter<CGAL_NP_CLASS, internal_np::vertex_normal_map_t>::value)
   {
     has_vnormal = true;
   }
+  else
+  {
+    has_vnormal = false;
+  }
   VIMap vim = CGAL::get_initialized_vertex_index_map(g, np);
   Vpm vpm = choose_parameter(get_parameter(np, internal_np::vertex_point),
                              get_const_property_map(boost::vertex_point, g));