diff --git a/addons/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py b/addons/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py
index 4d69c38f4..a4b1a600d 100644
--- a/addons/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py
+++ b/addons/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py
@@ -303,14 +303,14 @@ def __gather_mesh(vnode, blender_object, export_settings):
                 depsgraph = bpy.context.evaluated_depsgraph_get()
                 blender_mesh_owner = blender_object.evaluated_get(depsgraph)
                 blender_mesh = blender_mesh_owner.to_mesh(preserve_all_data_layers=True, depsgraph=depsgraph)
-                # Seems now (from 4.2) the custom properties are copied when evaluate a mesh that will not be changed
-                # so no need to copy them in that case
-                # But we need to remove some properties that are not needed
+                # Seems now (from 4.2) the custom properties are Statically Typed
+                # so no need to copy them in that case, because overwriting them will crash
                 if len(blender_mesh.keys()) == 0:
                     # Copy custom properties
                     for prop in [p for p in blender_object.data.keys() if p not in BLACK_LIST]:
                         blender_mesh[prop] = blender_object.data[prop]
                 else:
+                    # But we need to remove some properties that are not needed
                     for prop in [p for p in blender_object.data.keys() if p in BLACK_LIST]:
                         del blender_mesh[prop]