diff --git a/account_invoice_merge/models/account_move.py b/account_invoice_merge/models/account_move.py
index dfa56189ac3..27473fba1ac 100644
--- a/account_invoice_merge/models/account_move.py
+++ b/account_invoice_merge/models/account_move.py
@@ -43,6 +43,7 @@ def _get_invoice_line_key_cols(self):
             "sale_line_ids",  # odoo/sale
             "purchase_line_id",  # odoo/purchase
             "purchase_price",  # OCA/account_invoice_margin
+            "move_line_ids",  # OCA/stock_picking_invoice_link
         ]:
             if field in self.env["account.move.line"]._fields:
                 fields.append(field)