diff --git a/golem_activity_limite_registration/models/golem_activity_registration.py b/golem_activity_limite_registration/models/golem_activity_registration.py
new file mode 100644
index 0000000..1da353b
--- /dev/null
+++ b/golem_activity_limite_registration/models/golem_activity_registration.py
@@ -0,0 +1,35 @@
+# -*- coding: utf-8 -*-
+
+#    Copyright 2018 Youssef El Ouahby <youssef@yaltik.com>
+#    Copyright 2018 Fabien Bourgeois <fabien@yaltik.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+""" GOLEM Activity Registration """
+
+from odoo import models, fields, api, _
+
+class GolemActivityRegistration(models.Model):
+    """ GOLEM Activity Registration """
+    _inherit = 'golem.activity.registration'
+
+    @api.constrains('member_id')
+    def _check_member_reliability(self):
+        """ Forbid registration when user doesn't have a valide membership """
+        for reg in self:
+            if reg.activity_id.only_for_subscriber:
+                if reg.member_id.membership_state in ['none', 'canceled', 'old']:
+                    emsg = _('Subscription can not be executed : the targeted '
+                             'activity is only for subscriber.')
+                    raise models.ValidationError(emsg)