diff --git a/source/blender/blenkernel/intern/mesh.cc b/source/blender/blenkernel/intern/mesh.cc
index e14fa192c8a..f7c032e2867 100644
--- a/source/blender/blenkernel/intern/mesh.cc
+++ b/source/blender/blenkernel/intern/mesh.cc
@@ -1037,17 +1037,10 @@ Mesh *BKE_mesh_new_nomain(const int verts_num,
                           const int polys_num,
                           const int loops_num)
 {
-  Mesh *mesh = (Mesh *)BKE_libblock_alloc(
-      nullptr, ID_ME, BKE_idtype_idcode_to_name(ID_ME), LIB_ID_CREATE_LOCALIZE);
+  Mesh *mesh = static_cast<Mesh *>(BKE_libblock_alloc(
+      nullptr, ID_ME, BKE_idtype_idcode_to_name(ID_ME), LIB_ID_CREATE_LOCALIZE));
   BKE_libblock_init_empty(&mesh->id);
 
-  /* Don't use #CustomData_reset because we don't want to touch custom-data. */
-  copy_vn_i(mesh->vdata.typemap, CD_NUMTYPES, -1);
-  copy_vn_i(mesh->edata.typemap, CD_NUMTYPES, -1);
-  copy_vn_i(mesh->fdata.typemap, CD_NUMTYPES, -1);
-  copy_vn_i(mesh->pdata.typemap, CD_NUMTYPES, -1);
-  copy_vn_i(mesh->ldata.typemap, CD_NUMTYPES, -1);
-
   mesh->totvert = verts_num;
   mesh->totedge = edges_num;
   mesh->totpoly = polys_num;