diff --git a/inventory_provider/routes/poller.py b/inventory_provider/routes/poller.py
index bc84ad21a5d9ba08783d855d0fcae7c637a057a7..899ab82eb7970b91e78a3de482f3011b36ce56fe 100644
--- a/inventory_provider/routes/poller.py
+++ b/inventory_provider/routes/poller.py
@@ -34,7 +34,7 @@ import json
 import logging
 import re
 
-from flask import Blueprint, Response, current_app, request, jsonify
+from flask import Blueprint, Response, current_app, request
 from lxml import etree
 
 from inventory_provider import juniper
@@ -628,7 +628,7 @@ def gws_direct():
     :return:
     """
 
-    cache_key = f'classifier-cache:gws-direct'
+    cache_key = 'classifier-cache:gws-direct'
     r = common.get_current_redis()
 
     result = r.get(cache_key)
@@ -641,8 +641,6 @@ def gws_direct():
             for nren_isp in config_params['gws-direct']:
                 for host in nren_isp['hosts']:
                     for ifc in host['interfaces']:
-
-
                         yield {
                             'nren': nren_isp['nren'],
                             'isp': nren_isp['isp'],