diff --git a/modules/account_consolidation/account.py b/modules/account_consolidation/account.py
index b9fd7198d6..f94c62dea3 100644
--- a/modules/account_consolidation/account.py
+++ b/modules/account_consolidation/account.py
@@ -126,7 +126,8 @@ class Invoice(metaclass=PoolMeta):
             for party, companies in groupby(companies, attrgetter('party'))}
         for invoice in invoices:
             if not invoice.consolidation_company:
-                companies = party2company.get(invoice.party, [])
+                companies = set(party2company.get(invoice.party, []))
+                companies.discard(invoice.company)
                 if len(companies) == 1:
                     invoice.consolidation_company, = companies
                 elif companies: