diff --git a/freqtrade/exchange/kraken.py b/freqtrade/exchange/kraken.py
index e8a0e4ee1..8fcaf1263 100644
--- a/freqtrade/exchange/kraken.py
+++ b/freqtrade/exchange/kraken.py
@@ -14,11 +14,11 @@ logger = logging.getLogger(__name__)
 
 class Kraken(Exchange):
 
+    _params: Dict = {"trading_agreement": "agree"}
+
     def __init__(self, config: dict) -> None:
         super().__init__(config)
 
-        self._params = {"trading_agreement": "agree"}
-
     def buy(self, pair: str, ordertype: str, amount: float,
             rate: float, time_in_force) -> Dict:
         if self._conf['dry_run']: