diff --git a/freqtrade/tests/test_optimize_backtesting.py b/freqtrade/tests/test_optimize_backtesting.py
index ebf53f93e..812dd7b0c 100644
--- a/freqtrade/tests/test_optimize_backtesting.py
+++ b/freqtrade/tests/test_optimize_backtesting.py
@@ -13,8 +13,7 @@ def test_backtest(default_conf, mocker):
 
     data = optimize.load_data(ticker_interval=5, pairs=['BTC_ETH'])
     results = backtest(default_conf['stake_amount'], optimize.preprocess(data), 10, True)
-    num_results = len(results)
-    assert num_results > 0
+    assert not results.empty
 
 
 def test_1min_ticker_interval(default_conf, mocker):
@@ -24,7 +23,7 @@ def test_1min_ticker_interval(default_conf, mocker):
     # Run a backtesting for an exiting 5min ticker_interval
     data = optimize.load_data(ticker_interval=1, pairs=['BTC_UNITEST'])
     results = backtest(default_conf['stake_amount'], optimize.preprocess(data), 1, True)
-    assert len(results) > 0
+    assert not results.empty
 
 
 def test_backtest_with_new_pair(default_conf, ticker_history, mocker):