diff --git a/freqtrade/edge/edge_positioning.py b/freqtrade/edge/edge_positioning.py
index 5305e23cf..c19d4552a 100644
--- a/freqtrade/edge/edge_positioning.py
+++ b/freqtrade/edge/edge_positioning.py
@@ -238,20 +238,9 @@ class Edge:
         :param result Dataframe
         :return: result Dataframe
         """
-
-        # stake and fees
-        # stake = 0.015
-        # 0.05% is 0.0005
-        # fee = 0.001
-
-        # we set stake amount to an arbitrary amount.
-        # as it doesn't change the calculation.
-        # all returned values are relative.
-        # they are defined as ratios.
+        # We set stake amount to an arbitrary amount, as it doesn't change the calculation.
+        # All returned values are relative, they are defined as ratios.
         stake = 0.015
-        fee = self.fee
-        open_fee = fee / 2
-        close_fee = fee / 2
 
         result['trade_duration'] = result['close_time'] - result['open_time']
 
@@ -262,12 +251,12 @@ class Edge:
 
         # Buy Price
         result['buy_vol'] = stake / result['open_rate']  # How many target are we buying
-        result['buy_fee'] = stake * open_fee
+        result['buy_fee'] = stake * self.fee
         result['buy_spend'] = stake + result['buy_fee']  # How much we're spending
 
         # Sell price
         result['sell_sum'] = result['buy_vol'] * result['close_rate']
-        result['sell_fee'] = result['sell_sum'] * close_fee
+        result['sell_fee'] = result['sell_sum'] * self.fee
         result['sell_take'] = result['sell_sum'] - result['sell_fee']
 
         # profit_ratio
diff --git a/tests/edge/test_edge.py b/tests/edge/test_edge.py
index 2304c53c2..163ceff4b 100644
--- a/tests/edge/test_edge.py
+++ b/tests/edge/test_edge.py
@@ -335,12 +335,16 @@ def test_edge_init_error(mocker, edge_conf,):
         get_patched_freqtradebot(mocker, edge_conf)
 
 
-def test_process_expectancy(mocker, edge_conf):
+@pytest.mark.parametrize("fee,risk_reward_ratio,expectancy", [
+    (0.0005, 306.5384615384, 101.5128205128),
+    (0.001, 152.6923076923, 50.2307692308),
+])
+def test_process_expectancy(mocker, edge_conf, fee, risk_reward_ratio, expectancy):
     edge_conf['edge']['min_trade_number'] = 2
     freqtrade = get_patched_freqtradebot(mocker, edge_conf)
 
     def get_fee(*args, **kwargs):
-        return 0.001
+        return fee
 
     freqtrade.exchange.get_fee = get_fee
     edge = Edge(edge_conf, freqtrade.exchange, freqtrade.strategy)
@@ -394,9 +398,9 @@ def test_process_expectancy(mocker, edge_conf):
     assert 'TEST/BTC' in final
     assert final['TEST/BTC'].stoploss == -0.9
     assert round(final['TEST/BTC'].winrate, 10) == 0.3333333333
-    assert round(final['TEST/BTC'].risk_reward_ratio, 10) == 306.5384615384
+    assert round(final['TEST/BTC'].risk_reward_ratio, 10) == risk_reward_ratio
     assert round(final['TEST/BTC'].required_risk_reward, 10) == 2.0
-    assert round(final['TEST/BTC'].expectancy, 10) == 101.5128205128
+    assert round(final['TEST/BTC'].expectancy, 10) == expectancy
 
     # Pop last item so no trade is profitable
     trades.pop()