diff --git a/addons/sms/models/sms_template.py b/addons/sms/models/sms_template.py
index f106c21139f..d09dd26a703 100644
--- a/addons/sms/models/sms_template.py
+++ b/addons/sms/models/sms_template.py
@@ -103,3 +103,7 @@ class SMSTemplate(models.Model):
     def _render_template(self, template_txt, model, res_ids):
         """ Render the jinja template """
         return self.env['mail.template']._render_template(template_txt, model, res_ids)
+
+    def unlink(self):
+        self.sudo().mapped('sidebar_action_id').unlink()
+        return super(SMSTemplate, self).unlink()
diff --git a/addons/test_mail_full/tests/test_sms_template.py b/addons/test_mail_full/tests/test_sms_template.py
index fb8c1353fb1..a39edf8545f 100644
--- a/addons/test_mail_full/tests/test_sms_template.py
+++ b/addons/test_mail_full/tests/test_sms_template.py
@@ -68,3 +68,23 @@ class TestSmsTemplate(test_mail_full_common.TestSMSCommon, test_mail_full_common
                 self.assertEqual(rids, test_record_2.ids)
             else:
                 self.assertTrue(False, 'Should not return lang %s' % lang)
+
+    def test_sms_template_create_and_unlink_sidebar_action(self):
+        ActWindow = self.env['ir.actions.act_window']
+        self.sms_template.action_create_sidebar_action()
+        action_id = self.sms_template.sidebar_action_id.id
+
+        self.assertNotEqual(action_id, False)
+        self.assertEqual(ActWindow.search_count([('id', '=', action_id)]), 1)
+
+        self.sms_template.action_unlink_sidebar_action()
+        self.assertEqual(ActWindow.search_count([('id', '=', action_id)]), 0)
+
+    def test_sms_template_unlink_with_action(self):
+        ActWindow = self.env['ir.actions.act_window']
+        self.sms_template.action_create_sidebar_action()
+        action_id = self.sms_template.sidebar_action_id.id
+
+        self.sms_template.unlink()
+        self.assertEqual(ActWindow.search_count([('id', '=', action_id)]), 0)
+