diff --git a/l10n_ar_ux/wizards/account_move_change_rate.py b/l10n_ar_ux/wizards/account_move_change_rate.py
index 0466ef571..e6b374b6b 100644
--- a/l10n_ar_ux/wizards/account_move_change_rate.py
+++ b/l10n_ar_ux/wizards/account_move_change_rate.py
@@ -3,6 +3,7 @@
 # directory
 ##############################################################################
 from odoo import fields, models, api, _
+from odoo.exceptions import ValidationError
 
 
 class AccountMoveChangeRate(models.TransientModel):
@@ -26,6 +27,13 @@ def get_move(self):
         default=get_move
     )
 
+    @api.constrains('currency_rate')
+    def _prevent_change_currency(self):
+        """prevent currency change when the invoice is not draft
+        """
+        if self.move_id.state != 'draft':
+            raise ValidationError(_('This invoice is not draft, reset it to draft to change currency rate'))
+
     @api.onchange('move_id')
     def _onchange_move(self):
         self.currency_rate = self.move_id.l10n_ar_currency_rate or self.move_id.computed_currency_rate