diff --git a/tests/rpc/test_rpc_apiserver.py b/tests/rpc/test_rpc_apiserver.py
index f4229e0a0..7c815d8eb 100644
--- a/tests/rpc/test_rpc_apiserver.py
+++ b/tests/rpc/test_rpc_apiserver.py
@@ -1710,7 +1710,8 @@ def test_api_pairlists_evaluate(botclient, tmpdir, mocker):
     assert response['result']['whitelist'] == ['ETH/BTC', 'LTC/BTC', ]
     assert response['result']['length'] == 2
     # Patch __run_pairlists
-    plm = mocker.patch('freqtrade.rpc.api_server.api_background_tasks.__run_pairlist', return_value=None)
+    plm = mocker.patch('freqtrade.rpc.api_server.api_background_tasks.__run_pairlist',
+                       return_value=None)
     body = {
         "pairlists": [
             {"method": "StaticPairList", },