diff --git a/karbor/api/v1/quotas.py b/karbor/api/v1/quotas.py
index 5303a055..01d9e33e 100644
--- a/karbor/api/v1/quotas.py
+++ b/karbor/api/v1/quotas.py
@@ -153,8 +153,6 @@ class QuotasController(wsgi.Controller):
                     db.quota_update(context, project_id, key, value)
                 except exception.ProjectQuotaNotFound:
                     db.quota_create(context, project_id, key, value)
-                except exception.AdminRequired:
-                    raise exc.HTTPForbidden()
 
         LOG.info("Update quotas successfully.",
                  resource={'id': project_id})
@@ -184,11 +182,7 @@ class QuotasController(wsgi.Controller):
             msg = _("Invalid project id provided.")
             raise exc.HTTPBadRequest(explanation=msg)
         context.can(quota_policy.DELETE_POLICY)
-        try:
-            db.authorize_project_context(context, id)
-            QUOTAS.destroy_all_by_project(context, id)
-        except exception.NotAuthorized:
-            raise exc.HTTPForbidden()
+        QUOTAS.destroy_all_by_project(context, id)
 
         LOG.info("Delete quotas successfully.",
                  resource={'id': id})
diff --git a/karbor/tests/unit/api/v1/test_quotas.py b/karbor/tests/unit/api/v1/test_quotas.py
index cc61f120..d7405750 100644
--- a/karbor/tests/unit/api/v1/test_quotas.py
+++ b/karbor/tests/unit/api/v1/test_quotas.py
@@ -67,6 +67,15 @@ class QuotaApiTest(base.TestCase):
         self.assertRaises(exc.HTTPBadRequest, self.controller.update,
                           req, "73f74f90a1754bd7ad658afb3272323f", body=body)
 
+    def test_quota_update_with_not_admin_context(self):
+        body = {"quota": {"plans": 20}}
+        req = fakes.HTTPRequest.blank(
+            '/v1/quotas/73f74f90a1754bd7ad658afb3272323f',
+            use_admin_context=False)
+        self.assertRaises(
+            exception.PolicyNotAuthorized, self.controller.update,
+            req, "73f74f90a1754bd7ad658afb3272323f", body=body)
+
     @mock.patch(
         'karbor.quota.DbQuotaDriver.get_defaults')
     def test_quota_defaults(self, mock_quota_get):