diff --git a/tempest/api/compute/base.py b/tempest/api/compute/base.py
index ac03cdc..5f273d3 100644
--- a/tempest/api/compute/base.py
+++ b/tempest/api/compute/base.py
@@ -352,6 +352,11 @@
                                        'VERIFY_RESIZE')
         cls.servers_client.confirm_resize_server(server_id)
         waiters.wait_for_server_status(cls.servers_client, server_id, 'ACTIVE')
+        server = cls.servers_client.show_server(server_id)['server']
+        if new_flavor_id != server['flavor']['id']:
+            msg = ('Flavor id of %s is not equal to new_flavor_id.'
+                   % server_id)
+            raise lib_exc.TempestException(msg)
 
     @classmethod
     def delete_volume(cls, volume_id):
diff --git a/tempest/scenario/test_network_advanced_server_ops.py b/tempest/scenario/test_network_advanced_server_ops.py
index 7c404ad..e4ab11c 100644
--- a/tempest/scenario/test_network_advanced_server_ops.py
+++ b/tempest/scenario/test_network_advanced_server_ops.py
@@ -195,6 +195,8 @@
         waiters.wait_for_server_status(self.servers_client, server['id'],
                                        'VERIFY_RESIZE')
         self.servers_client.confirm_resize_server(server['id'])
+        server = self.servers_client.show_server(server['id'])['server']
+        self.assertEqual(resize_flavor, server['flavor']['id'])
         self._wait_server_status_and_check_network_connectivity(
             server, keypair, floating_ip)