diff --git a/contracts/permit2-order/Permit2OrderLib.sol b/contracts/permit2-order/Permit2OrderLib.sol
index 5539224e6..1b2a5f10e 100644
--- a/contracts/permit2-order/Permit2OrderLib.sol
+++ b/contracts/permit2-order/Permit2OrderLib.sol
@@ -29,16 +29,18 @@ library Permit2OrderLib {
             "address offerer,",
             "uint256 nonce,",
             "uint256 initiateDeadline,",
-            "uint256 fillPeriod",
+            "uint32 fillPeriod",
             "uint32 challengePeriod",
             "uint32 proofPeriod",
             "address settlementOracle",
-            "uint256 validationContract,",
-            "uint256 validationData,",
+            "address validationContract,",
+            "bytes validationData,",
             "address inputToken,",
             "uint256 inputAmount,",
             "address collateralToken,",
             "uint256 collateralAmount,",
+            "address challengerCollateralToken,",
+            "uint256 challengerCollateralAmount,",
             "OutputToken[] outputs)",
             OUTPUT_TOKEN_TYPE
         );