diff --git a/src/multiVolumes.cpp b/src/multiVolumes.cpp
index 28bcdf9a49..25a4147d65 100644
--- a/src/multiVolumes.cpp
+++ b/src/multiVolumes.cpp
@@ -184,7 +184,6 @@ void MultiVolumes::carveCuttingMeshes(std::vector<Slicer*>& volumes, const std::
             if (cutting_mesh.settings.get<ESurfaceMode>("magic_mesh_surface_mode") != ESurfaceMode::NORMAL)
             {
                 cutting_mesh_polylines.clear();
-                cutting_mesh_polygons.clear();
                 PolylineStitcher<Polygons, Polygon, Point>::stitch(new_polylines, cutting_mesh_polylines, cutting_mesh_polygons, surface_line_width);
             }
         }