diff --git a/addons/account/models/account_journal.py b/addons/account/models/account_journal.py
index a210c5fd910..58a4e0695df 100644
--- a/addons/account/models/account_journal.py
+++ b/addons/account/models/account_journal.py
@@ -28,6 +28,9 @@ class AccountJournalGroup(models.Model):
         check_company=True)
     sequence = fields.Integer(default=10)
 
+    _sql_constraints = [
+        ('uniq_name', 'unique(company_id, name)', 'A journal group name must be unique per company.'),
+    ]
 
 class AccountJournal(models.Model):
     _name = "account.journal"