diff --git a/easy_my_coop/models/coop.py b/easy_my_coop/models/coop.py
index a2cdd40..0f27ff3 100644
--- a/easy_my_coop/models/coop.py
+++ b/easy_my_coop/models/coop.py
@@ -204,6 +204,7 @@ class subscription_request(models.Model):
     ordered_parts = fields.Integer(string='Number of Share',
                                    required=True,
                                    readonly=True,
+                                   default=1,
                                    states={'draft': [('readonly', False)]})
     address = fields.Char(string='Address',
                           required=True,