diff --git a/freqtrade/freqtradebot.py b/freqtrade/freqtradebot.py
index d8f789e6a..ebe30cec6 100644
--- a/freqtrade/freqtradebot.py
+++ b/freqtrade/freqtradebot.py
@@ -60,10 +60,10 @@ class FreqtradeBot(object):
         self.exchange = Exchange(self.config)
         self.wallets = Wallets(self.exchange)
         if self.config.get('dynamic_whitelist', None):
-            self.pairlists = VolumePairList(self, self.config)
+            self.pairlists: StaticPairList = VolumePairList(self, self.config)
 
         else:
-            self.pairlists = StaticPairList(self, self.config)
+            self.pairlists: StaticPairList = StaticPairList(self, self.config)
 
         # Initializing Edge only if enabled
         self.edge = Edge(self.config, self.exchange, self.strategy) if \
diff --git a/freqtrade/pairlist/StaticPairList.py b/freqtrade/pairlist/StaticPairList.py
index 8466d7b82..24ad30deb 100644
--- a/freqtrade/pairlist/StaticPairList.py
+++ b/freqtrade/pairlist/StaticPairList.py
@@ -5,7 +5,7 @@ Provides lists as configured in config.json
 
  """
 import logging
-from typing import List, Optional
+from typing import List
 
 logger = logging.getLogger(__name__)
 
diff --git a/freqtrade/tests/test_acl_pair.py b/freqtrade/tests/test_acl_pair.py
index 997c171ad..8e41ad860 100644
--- a/freqtrade/tests/test_acl_pair.py
+++ b/freqtrade/tests/test_acl_pair.py
@@ -50,7 +50,7 @@ def test_refresh_pairlists(mocker, markets, whitelist_conf):
     # List ordered by BaseVolume
     whitelist = ['ETH/BTC', 'TKN/BTC']
     # Ensure all except those in whitelist are removed
-    assert set(whitelist)== set(freqtradebot.pairlists.whitelist)
+    assert set(whitelist) == set(freqtradebot.pairlists.whitelist)
     assert whitelist_conf['exchange']['pair_blacklist'] == freqtradebot.pairlists.blacklist