diff --git a/backtesting/backtest_iron_condor.py b/backtesting/backtest_iron_condor.py
index ee18224..05b4b67 100644
--- a/backtesting/backtest_iron_condor.py
+++ b/backtesting/backtest_iron_condor.py
@@ -111,12 +111,12 @@ def _backtest_iron_condor(
 
     # Calculate entry slippage.
     if original_call_spread_price > 0.05:
-        original_call_spread_price = original_call_spread_price - 0.10
+        original_call_spread_price = original_call_spread_price - call_spread_strategy.entry_slippage
         original_call_spread_price -= (original_call_spread_price % 0.05)
     logging.info('Original Call Spread Price: %s', original_call_spread_price)
 
     if original_put_spread_price > 0.05:
-        original_put_spread_price = original_put_spread_price - 0.10
+        original_put_spread_price = original_put_spread_price - put_spread_strategy.entry_slippage
         original_put_spread_price -= (original_put_spread_price % 0.05)
     logging.info('Original Put Spread Price: %s', original_put_spread_price)
     
@@ -184,8 +184,7 @@ def _backtest_iron_condor(
             if current_call_spread_price >= ((call_spread_strategy.stop_loss_multiple + 1) * original_call_spread_price):
                 premium_received -= original_call_spread_price * (call_spread_strategy.stop_loss_multiple + 1)
                 call_spread_details['Close'] = original_call_spread_price * (call_spread_strategy.stop_loss_multiple + 1) + 0.10
-                # Calculate exit slippage.
-                premium_received -= 0.20 # TODO: Make this configurable.
+                premium_received -= call_spread_strategy.exit_slippage
                 call_spread_stopped_out = True
                 exit_time = call_spread.name[-8:]
                 logging.info('Call Spread Stopped Out')
@@ -193,7 +192,7 @@ def _backtest_iron_condor(
         if not put_spread_stopped_out:
             if current_put_spread_price >= ((put_spread_strategy.stop_loss_multiple + 1) * original_put_spread_price):
                 premium_received -= original_put_spread_price * (put_spread_strategy.stop_loss_multiple + 1)
-                premium_received -= 0.20 # TODO: Make this configurable.
+                premium_received -= put_spread_strategy.exit_slippage
                 put_spread_details['Close'] = original_put_spread_price * (put_spread_strategy.stop_loss_multiple + 1) + 0.10
                 put_spread_stopped_out = True
                 exit_time = call_spread.name[-8:]