diff --git a/src/Mod/Points/pointscommands/commands.py b/src/Mod/Points/pointscommands/commands.py
index 890cf9e7c4..86d853c800 100644
--- a/src/Mod/Points/pointscommands/commands.py
+++ b/src/Mod/Points/pointscommands/commands.py
@@ -58,7 +58,7 @@ def make_points_from_geometry(geometries, distance):
         if len(points_and_normals[1]) > 0 and len(points_and_normals[0]) == len(
             points_and_normals[1]
         ):
-            points.addProperty("Points::PropertyNormalList", "Normal")
+            points.addProperty("Points::PropertyNormalList", "Normal", locked=True)
             points.Normal = points_and_normals[1]
 
         points.purgeTouched()