diff --git a/freqtrade/optimize/backtesting.py b/freqtrade/optimize/backtesting.py
index 376730d0f..ab45b7754 100644
--- a/freqtrade/optimize/backtesting.py
+++ b/freqtrade/optimize/backtesting.py
@@ -106,7 +106,7 @@ class Backtesting(object):
             len(results[results.profit_BTC > 0]),
             len(results[results.profit_BTC < 0])
         ])
-        return tabulate(tabular_data, headers=headers, floatfmt=floatfmt)
+        return tabulate(tabular_data, headers=headers, floatfmt=floatfmt, tablefmt="pipe")
 
     def _get_sell_trade_entry(
             self, pair: str, buy_row: DataFrame,