diff --git a/quantum/extensions/quotasv2.py b/quantum/extensions/quotasv2.py
index 87015d39ba..e68b791e6b 100644
--- a/quantum/extensions/quotasv2.py
+++ b/quantum/extensions/quotasv2.py
@@ -35,13 +35,6 @@ EXTENDED_ATTRIBUTES_2_0 = {
     RESOURCE_COLLECTION: {}
 }
 
-for quota_resource in QUOTAS.resources.iterkeys():
-    attr_dict = EXTENDED_ATTRIBUTES_2_0[RESOURCE_COLLECTION]
-    attr_dict[quota_resource] = {'allow_post': False,
-                                 'allow_put': True,
-                                 'convert_to': int,
-                                 'is_visible': True}
-
 
 class QuotaSetsController(wsgi.Controller):
 
@@ -49,10 +42,23 @@ class QuotaSetsController(wsgi.Controller):
         self._resource_name = RESOURCE_NAME
         self._plugin = plugin
         self._driver = importutils.import_class(DB_QUOTA_DRIVER)
+        self._update_extended_attributes = True
+
+    def _update_attributes(self):
+        for quota_resource in QUOTAS.resources.iterkeys():
+            attr_dict = EXTENDED_ATTRIBUTES_2_0[RESOURCE_COLLECTION]
+            attr_dict[quota_resource] = {'allow_post': False,
+                                         'allow_put': True,
+                                         'convert_to': int,
+                                         'is_visible': True}
+        self._update_extended_attributes = False
 
     def _get_body(self, request):
         body = self._deserialize(request.body,
                                  request.best_match_content_type())
+        if self._update_extended_attributes is True:
+            self._update_attributes()
+
         attr_info = EXTENDED_ATTRIBUTES_2_0[RESOURCE_COLLECTION]
         req_body = base.Controller.prepare_request_body(
             request.context, body, False, self._resource_name, attr_info)
diff --git a/quantum/tests/unit/test_quota_per_tenant_ext.py b/quantum/tests/unit/test_quota_per_tenant_ext.py
index 5b1285d668..d86b0e6b1e 100644
--- a/quantum/tests/unit/test_quota_per_tenant_ext.py
+++ b/quantum/tests/unit/test_quota_per_tenant_ext.py
@@ -139,6 +139,20 @@ class QuotaExtensionTestCase(testlib_api.WebTestCase):
         quota = self.deserialize(res)
         self.assertEqual(100, quota['quota']['network'])
 
+    def test_update_attributes(self):
+        tenant_id = 'tenant_id1'
+        env = {'quantum.context': context.Context('', tenant_id + '2',
+                                                  is_admin=True)}
+        quotas = {'quota': {'extra1': 100}}
+        res = self.api.put(_get_path('quotas', id=tenant_id, fmt=self.fmt),
+                           self.serialize(quotas), extra_environ=env)
+        self.assertEqual(200, res.status_int)
+        env2 = {'quantum.context': context.Context('', tenant_id)}
+        res = self.api.get(_get_path('quotas', id=tenant_id, fmt=self.fmt),
+                           extra_environ=env2)
+        quota = self.deserialize(res)
+        self.assertEqual(100, quota['quota']['extra1'])
+
     def test_delete_quotas_with_admin(self):
         tenant_id = 'tenant_id1'
         env = {'quantum.context': context.Context('', tenant_id + '2',