diff --git a/account_cashbox/models/account_cashbox_session.py b/account_cashbox/models/account_cashbox_session.py
index 0402070a..66f7c581 100755
--- a/account_cashbox/models/account_cashbox_session.py
+++ b/account_cashbox/models/account_cashbox_session.py
@@ -37,7 +37,7 @@ class AccountCashboxSession(models.Model):
     allow_concurrent_sessions = fields.Boolean(related='cashbox_id.allow_concurrent_sessions')
     company_id = fields.Many2one(related='cashbox_id.company_id', store=True)
 
-    _sql_constraints = [('uniq_name', 'unique(name)', "El nombre de esta sesión de caja debe ser único !")]
+    _sql_constraints = [('uniq_name_cashbox', 'unique(name, cashbox_id)', "El nombre de esta sesión de caja debe ser único!")]
 
     @api.depends('cashbox_id')
     def _compute_user_ids(self):