diff --git a/Point_set_processing_3/include/CGAL/internal/Rich_grid.h b/Point_set_processing_3/include/CGAL/Point_set_processing_3/internal/Rich_grid.h
similarity index 100%
rename from Point_set_processing_3/include/CGAL/internal/Rich_grid.h
rename to Point_set_processing_3/include/CGAL/Point_set_processing_3/internal/Rich_grid.h
diff --git a/Point_set_processing_3/include/CGAL/internal/Voronoi_covariance_3/voronoi_covariance_3.h b/Point_set_processing_3/include/CGAL/Point_set_processing_3/internal/Voronoi_covariance_3/voronoi_covariance_3.h
similarity index 98%
rename from Point_set_processing_3/include/CGAL/internal/Voronoi_covariance_3/voronoi_covariance_3.h
rename to Point_set_processing_3/include/CGAL/Point_set_processing_3/internal/Voronoi_covariance_3/voronoi_covariance_3.h
index f1fd7e15e13..1907219b70a 100644
--- a/Point_set_processing_3/include/CGAL/internal/Voronoi_covariance_3/voronoi_covariance_3.h
+++ b/Point_set_processing_3/include/CGAL/Point_set_processing_3/internal/Voronoi_covariance_3/voronoi_covariance_3.h
@@ -30,7 +30,7 @@
 
 #include <list>
 #include <CGAL/array.h>
-#include <CGAL/internal/Voronoi_covariance_3/voronoi_covariance_sphere_3.h>
+#include <CGAL/Point_set_processing_3/internal/Voronoi_covariance_3/voronoi_covariance_sphere_3.h>
 #ifdef CGAL_VORONOI_COVARIANCE_USE_CONSTRUCTIONS
 #include <CGAL/Convex_hull_3/dual/halfspace_intersection_with_constructions_3.h>
 #else
diff --git a/Point_set_processing_3/include/CGAL/internal/Voronoi_covariance_3/voronoi_covariance_sphere_3.h b/Point_set_processing_3/include/CGAL/Point_set_processing_3/internal/Voronoi_covariance_3/voronoi_covariance_sphere_3.h
similarity index 100%
rename from Point_set_processing_3/include/CGAL/internal/Voronoi_covariance_3/voronoi_covariance_sphere_3.h
rename to Point_set_processing_3/include/CGAL/Point_set_processing_3/internal/Voronoi_covariance_3/voronoi_covariance_sphere_3.h
diff --git a/Point_set_processing_3/include/CGAL/edge_aware_upsample_point_set.h b/Point_set_processing_3/include/CGAL/edge_aware_upsample_point_set.h
index 2e03a58b14d..2d36220ab64 100644
--- a/Point_set_processing_3/include/CGAL/edge_aware_upsample_point_set.h
+++ b/Point_set_processing_3/include/CGAL/edge_aware_upsample_point_set.h
@@ -26,7 +26,7 @@
 
 #include <CGAL/property_map.h>
 #include <CGAL/point_set_processing_assertions.h>
-#include <CGAL/internal/Rich_grid.h>
+#include <CGAL/Point_set_processing_3/internal/Rich_grid.h>
 #include <CGAL/Real_timer.h>
 #include <CGAL/Memory_sizer.h>
 #include <CGAL/compute_average_spacing.h>
diff --git a/Point_set_processing_3/include/CGAL/vcm_estimate_normals.h b/Point_set_processing_3/include/CGAL/vcm_estimate_normals.h
index bb045cc5402..9b79b966292 100644
--- a/Point_set_processing_3/include/CGAL/vcm_estimate_normals.h
+++ b/Point_set_processing_3/include/CGAL/vcm_estimate_normals.h
@@ -25,7 +25,7 @@
 #include <CGAL/license/Point_set_processing_3.h>
 
 
-#include <CGAL/internal/Voronoi_covariance_3/voronoi_covariance_3.h>
+#include <CGAL/Point_set_processing_3/internal/Voronoi_covariance_3/voronoi_covariance_3.h>
 
 #include <CGAL/property_map.h>
 #include <CGAL/Delaunay_triangulation_3.h>