diff --git a/freqtrade/optimize/hyperopt.py b/freqtrade/optimize/hyperopt.py
index 59cc0f296..a4b3a6af7 100644
--- a/freqtrade/optimize/hyperopt.py
+++ b/freqtrade/optimize/hyperopt.py
@@ -75,7 +75,7 @@ class Hyperopt(Backtesting):
         return arg_dict
 
     @staticmethod
-    def populate_indicators(dataframe: DataFrame) -> DataFrame:
+    def populate_indicators(dataframe: DataFrame, pair:str) -> DataFrame:
         dataframe['adx'] = ta.ADX(dataframe)
         macd = ta.MACD(dataframe)
         dataframe['macd'] = macd['macd']