diff --git a/agent/__init__.py b/agent/__init__.py
index cd8d7a0..a95b91d 100644
--- a/agent/__init__.py
+++ b/agent/__init__.py
@@ -1,6 +1,6 @@
 # -*- coding: utf8 -*-
 from mod_mikrotik import MikrotikTransmitter
-from core import NasFailedResult
+from core import NasFailedResult, NasNetworkError
 from structs import TariffStruct, AbonStruct