diff --git a/tests/cli_clients.py b/tests/cli_clients.py
index 0114000..35f31cb 100644
--- a/tests/cli_clients.py
+++ b/tests/cli_clients.py
@@ -42,7 +42,7 @@ def __init__(self, sim_client):
         self.sim_client = sim_client
 
     # These are the only two methods we need
-    async def select_coins(self, amount, wallet_id, max_coin_amount=uint64(2**64 - 1)) -> List[Coin]:
+    async def select_coins(self, amount, wallet_id, max_coin_amount=uint64(2 ** 64 - 1)) -> List[Coin]:
         return [
             sorted(
                 await self.sim_client.get_coin_records_by_puzzle_hashes([ACS_PH], include_spent_coins=False),