diff --git a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/Adaptive_sizing_field.h b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/Adaptive_sizing_field.h
index fcc96deb9ba..b1794a6a6b7 100644
--- a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/Adaptive_sizing_field.h
+++ b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/Adaptive_sizing_field.h
@@ -15,7 +15,7 @@
 
 #include <CGAL/license/Polygon_mesh_processing/meshing_hole_filling.h>
 
-#include <CGAL/Polygon_mesh_processing/internal/Isotropic_remeshing/Sizing_field_base.h>
+#include <CGAL/Polygon_mesh_processing/Isotropic_remeshing/Sizing_field_base.h>
 #include <CGAL/Polygon_mesh_processing/interpolated_corrected_curvatures.h>
 
 #include <CGAL/boost/graph/selection.h>
diff --git a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Isotropic_remeshing/Sizing_field_base.h b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/Isotropic_remeshing/Sizing_field_base.h
similarity index 100%
rename from Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Isotropic_remeshing/Sizing_field_base.h
rename to Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/Isotropic_remeshing/Sizing_field_base.h
diff --git a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/Uniform_sizing_field.h b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/Uniform_sizing_field.h
index c4927392107..02d21df369b 100644
--- a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/Uniform_sizing_field.h
+++ b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/Uniform_sizing_field.h
@@ -15,7 +15,7 @@
 
 #include <CGAL/license/Polygon_mesh_processing/meshing_hole_filling.h>
 
-#include <CGAL/Polygon_mesh_processing/internal/Isotropic_remeshing/Sizing_field_base.h>
+#include <CGAL/Polygon_mesh_processing/Isotropic_remeshing/Sizing_field_base.h>
 
 #include <CGAL/number_utils.h>