diff --git a/Polyhedron/demo/Polyhedron/Plugins/PMP/Isotropic_remeshing_plugin.cpp b/Polyhedron/demo/Polyhedron/Plugins/PMP/Isotropic_remeshing_plugin.cpp
index aec9867409c..afb5ea4213a 100644
--- a/Polyhedron/demo/Polyhedron/Plugins/PMP/Isotropic_remeshing_plugin.cpp
+++ b/Polyhedron/demo/Polyhedron/Plugins/PMP/Isotropic_remeshing_plugin.cpp
@@ -467,7 +467,7 @@ public Q_SLOTS:
 #ifdef USE_SURFACE_MESH
         selection_item->polyhedron_item()->setColor(
               selection_item->polyhedron_item()->color());
-        selection_item->polyhedron_item()->setItemIsMulticolor(false);
+        selection_item->polyhedron_item()->setItemIsMulticolor(fpmap_valid);
         selection_item->polyhedron_item()->polyhedron()->collect_garbage();
 #else
         if(!selection_item->polyhedron_item()->isItemMulticolor())