diff --git a/Arrangement_on_surface_2/include/CGAL/Arr_point_location_result.h b/Arrangement_on_surface_2/include/CGAL/Arr_point_location_result.h
index 4651b64c4dd..50aa748ba72 100644
--- a/Arrangement_on_surface_2/include/CGAL/Arr_point_location_result.h
+++ b/Arrangement_on_surface_2/include/CGAL/Arr_point_location_result.h
@@ -15,6 +15,7 @@
 #include <CGAL/license/Arrangement_on_surface_2.h>
 
 #include <CGAL/disable_warnings.h>
+#include <CGAL/assertions.h>
 
 #include <optional>
 #include <variant>
diff --git a/Tetrahedral_remeshing/include/CGAL/Tetrahedral_remeshing/internal/tetrahedral_remeshing_helpers.h b/Tetrahedral_remeshing/include/CGAL/Tetrahedral_remeshing/internal/tetrahedral_remeshing_helpers.h
index 07848cbe492..1c4237191d0 100644
--- a/Tetrahedral_remeshing/include/CGAL/Tetrahedral_remeshing/internal/tetrahedral_remeshing_helpers.h
+++ b/Tetrahedral_remeshing/include/CGAL/Tetrahedral_remeshing/internal/tetrahedral_remeshing_helpers.h
@@ -24,6 +24,7 @@
 #include <CGAL/Weighted_point_3.h>
 #include <CGAL/Vector_3.h>
 #include <CGAL/utility.h>
+#include <CGAL/SMDS_3/internal/indices_management.h>
 
 #include <CGAL/IO/File_binary_mesh_3.h>