diff --git a/account_invoice_inter_company/models/account_move.py b/account_invoice_inter_company/models/account_move.py
index f9ad59e70d7..802543d3170 100644
--- a/account_invoice_inter_company/models/account_move.py
+++ b/account_invoice_inter_company/models/account_move.py
@@ -341,6 +341,7 @@ class AccountMoveLine(models.Model):
         readonly=True,
         copy=False,
         prefetch=False,
+        index=True,
     )
 
     @api.model