diff --git a/systems/positionsizing.py b/systems/positionsizing.py
index c4e1509738..7bd858622d 100644
--- a/systems/positionsizing.py
+++ b/systems/positionsizing.py
@@ -535,7 +535,9 @@ def get_fx_rate(self, instrument_code: str) -> pd.Series:
         """
 
         base_currency = self.get_base_currency()
-        fx_rate = self.rawdata_stage.get_fx_for_instrument(instrument_code, base_currency)
+        fx_rate = self.rawdata_stage.get_fx_for_instrument(
+            instrument_code, base_currency
+        )
 
         return fx_rate
 
diff --git a/systems/rawdata.py b/systems/rawdata.py
index 1a5f2ea89b..bb7992dc2a 100644
--- a/systems/rawdata.py
+++ b/systems/rawdata.py
@@ -48,10 +48,10 @@ def get_raw_cost_data(self, instrument_code: str):
     def get_value_of_block_price_move(self, instrument_code: str) -> float:
         return self.data_stage.get_value_of_block_price_move(instrument_code)
 
-    def get_fx_for_instrument(
-        self, instrument_code: str, base_currency: str
-    ):
-        return self.data_stage.get_fx_for_instrument(instrument_code=instrument_code, base_currency=base_currency)
+    def get_fx_for_instrument(self, instrument_code: str, base_currency: str):
+        return self.data_stage.get_fx_for_instrument(
+            instrument_code=instrument_code, base_currency=base_currency
+        )
 
     @input
     def get_daily_prices(self, instrument_code) -> pd.Series: