diff --git a/account_asset_management/models/account_move.py b/account_asset_management/models/account_move.py
index a32ac9d58..e9cb04b1b 100644
--- a/account_asset_management/models/account_move.py
+++ b/account_asset_management/models/account_move.py
@@ -115,22 +115,20 @@ class AccountMoveLine(models.Model):
 
     @api.multi
     def write(self, vals):
-        # Check if at least one asset is linked to a move
-        linked_asset = False
-        for move in self:
-            linked_asset = move.asset_id
-            if linked_asset:
-                break
         if (
-            linked_asset and
             set(vals).intersection(FIELDS_AFFECTS_ASSET_MOVE_LINE) and
             not (
                 self.env.context.get('allow_asset_removal') and
                 list(vals.keys()) == ['asset_id'])
         ):
-            raise UserError(
-                _("You cannot change an accounting item "
-                  "linked to an asset depreciation line."))
+            # Check if at least one asset is linked to a move
+            linked_asset = False
+            for move in self:
+                linked_asset = move.asset_id
+                if linked_asset:
+                    raise UserError(
+                        _("You cannot change an accounting item "
+                          "linked to an asset depreciation line."))
         if vals.get('asset_id'):
             raise UserError(
                 _("You are not allowed to link "