diff --git a/freqtrade/__main__.py b/freqtrade/__main__.py
old mode 100644
new mode 100755
diff --git a/freqtrade/commands/analyze_commands.py b/freqtrade/commands/analyze_commands.py
old mode 100755
new mode 100644
diff --git a/freqtrade/commands/hyperopt_commands.py b/freqtrade/commands/hyperopt_commands.py
old mode 100755
new mode 100644
diff --git a/freqtrade/data/entryexitanalysis.py b/freqtrade/data/entryexitanalysis.py
old mode 100755
new mode 100644
diff --git a/freqtrade/optimize/hyperopt_tools.py b/freqtrade/optimize/hyperopt_tools.py
old mode 100755
new mode 100644
diff --git a/freqtrade/vendor/qtpylib/indicators.py b/freqtrade/vendor/qtpylib/indicators.py
index 4f14ae13c..3da4f038d 100644
--- a/freqtrade/vendor/qtpylib/indicators.py
+++ b/freqtrade/vendor/qtpylib/indicators.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 #
 # QTPyLib: Quantitative Trading Python Library
diff --git a/freqtrade/worker.py b/freqtrade/worker.py
old mode 100755
new mode 100644
diff --git a/scripts/ws_client.py b/scripts/ws_client.py
old mode 100644
new mode 100755
diff --git a/tests/data/test_entryexitanalysis.py b/tests/data/test_entryexitanalysis.py
old mode 100755
new mode 100644
diff --git a/tests/exchange/test_ccxt_compat.py b/tests/exchange/test_ccxt_compat.py
index f1d240f9f..bbeb56c6a 100644
--- a/tests/exchange/test_ccxt_compat.py
+++ b/tests/exchange/test_ccxt_compat.py
@@ -309,7 +309,7 @@ def exchange(request, exchange_conf):
 
 @pytest.fixture(params=EXCHANGES, scope="class")
 def exchange_futures(request, exchange_conf, class_mocker):
-    if not EXCHANGES[request.param].get('futures') is True:
+    if EXCHANGES[request.param].get('futures') is not True:
         yield None, request.param
     else:
         exchange_conf = set_test_proxy(
diff --git a/tests/strategy/test_interface.py b/tests/strategy/test_interface.py
index fe562907a..0b30d2059 100644
--- a/tests/strategy/test_interface.py
+++ b/tests/strategy/test_interface.py
@@ -214,12 +214,12 @@ def test_ignore_expired_candle(default_conf):
 
     current_time = latest_date + timedelta(seconds=30 + 300)
 
-    assert not strategy.ignore_expired_candle(
+    assert strategy.ignore_expired_candle(
         latest_date=latest_date,
         current_time=current_time,
         timeframe_seconds=300,
         enter=True
-    ) is True
+    ) is not True
 
 
 def test_assert_df_raise(mocker, caplog, ohlcv_history):