diff --git a/freqtrade/resolvers/exchange_resolver.py b/freqtrade/resolvers/exchange_resolver.py
index e888028dc..448fdeb8b 100644
--- a/freqtrade/resolvers/exchange_resolver.py
+++ b/freqtrade/resolvers/exchange_resolver.py
@@ -19,7 +19,7 @@ class ExchangeResolver(IResolver):
     object_type = Exchange
 
     @staticmethod
-    def load_exchange(config: Config, validate: bool = True,
+    def load_exchange(config: Config, *, validate: bool = True,
                       load_leverage_tiers: bool = False) -> Exchange:
         """
         Load the custom class from config parameter