diff --git a/mev_inspect/classifiers/specs/uniswap.py b/mev_inspect/classifiers/specs/uniswap.py
index 143253d..64655f8 100644
--- a/mev_inspect/classifiers/specs/uniswap.py
+++ b/mev_inspect/classifiers/specs/uniswap.py
@@ -9,7 +9,7 @@ ZEROX_CONTRACT_SPECS = [
     ClassifierSpec(
         abi_name="exchangeProxy",
         protocol=Protocol.zerox,
-        valid_contract_addresses=["0xdef1c0ded9bec7f1a1670819833240f027b25eff"],
+        valid_contract_addresses=["0xDef1C0ded9bec7F1a1670819833240f027b25EfF"],
     ),
     ClassifierSpec(
         abi_name="exchangeProxyAllowanceTarget",