diff --git a/odex25_transactions/exp_transaction_documents/models/transaction.py b/odex25_transactions/exp_transaction_documents/models/transaction.py
index 3d65c52d6..a8d1e40e7 100644
--- a/odex25_transactions/exp_transaction_documents/models/transaction.py
+++ b/odex25_transactions/exp_transaction_documents/models/transaction.py
@@ -29,7 +29,7 @@ class Transaction(models.Model):
         ('new', _('New Transaction')),
         ('forward', _('Forwarded Transaction')),
         ('reply', _('Reply'))], default='new')
-    subject = fields.Char(string='Subject')
+    subject = fields.Char(string='Subject', size=65)
     important_id = fields.Many2one(comodel_name='cm.transaction.important', string='Important Degree')
     transaction_date = fields.Date(string='Transaction Date', default=fields.Date.today)
     transaction_date_hijri = fields.Char(string='Transaction Date (Hijri)', compute='compute_hijri')