diff --git a/shopfloor_reception/services/reception.py b/shopfloor_reception/services/reception.py
index 0800eb65142..0b442dad702 100644
--- a/shopfloor_reception/services/reception.py
+++ b/shopfloor_reception/services/reception.py
@@ -1291,14 +1291,14 @@ def _auto_post_line(self, selected_line):
         if selected_line.qty_done == move_quantity:
             # In case of full quantity, post the initial move
             return selected_line.move_id.extract_and_action_done()
+        lock = self._actions_for("lock")
+        lock.for_update(move)
         split_move_vals = move._split(selected_line.qty_done)
         new_move = move.create(split_move_vals)
         new_move.move_line_ids = selected_line
         new_move._action_confirm(merge=False)
         new_move._recompute_state()
         new_move._action_assign()
-        lock = self._actions_for("lock")
-        lock.for_update(move)
         move._recompute_state()
         new_move.extract_and_action_done()