diff --git a/source/blender/editors/sculpt_paint/sculpt.c b/source/blender/editors/sculpt_paint/sculpt.c
index 2725fc1eae4..32772c7ff62 100644
--- a/source/blender/editors/sculpt_paint/sculpt.c
+++ b/source/blender/editors/sculpt_paint/sculpt.c
@@ -3651,6 +3651,11 @@ void SCULPT_flush_stroke_deform(Sculpt *sd, Object *ob, bool is_proxy_used)
     }
 
     MEM_SAFE_FREE(nodes);
+
+    /* Modifiers could depend on mesh normals, so we should update them.
+     * NOTE: then if sculpting happens on locked key, normals should be re-calculate after applying
+     * coords from key-block on base mesh. */
+    BKE_mesh_calc_normals(me);
   }
   else if (ss->shapekey_active) {
     sculpt_update_keyblock(ob);