diff --git a/test/AuctionHouse/sendPayout.t.sol b/test/AuctionHouse/sendPayout.t.sol
index 9a945b6b..e67c8a90 100644
--- a/test/AuctionHouse/sendPayout.t.sol
+++ b/test/AuctionHouse/sendPayout.t.sol
@@ -244,9 +244,9 @@ contract SendPayoutTest is Test, Permit2User {
     // ========== Derivative flow ========== //
 
     // [ ] given the base token is a derivative
-    //  [ ] given a condenser is set
-    //   [ ] given the derivative parameters are invalid
-    //     [ ] it reverts
+    //  [X] given a condenser is set
+    //   [X] given the derivative parameters are invalid
+    //     [X] it reverts
     //   [X] it uses the condenser to determine derivative parameters
     //  [ ] given a condenser is not set
     //   [ ] given the derivative is wrapped
@@ -294,7 +294,7 @@ contract SendPayoutTest is Test, Permit2User {
     }
 
     modifier givenDerivativeParamsAreInvalid() {
-        derivativeParams = abi.encode(0);
+        derivativeParams = abi.encode("one", "two", uint256(2));
         routingParams.derivativeParams = derivativeParams;
         _;
     }
@@ -352,6 +352,20 @@ contract SendPayoutTest is Test, Permit2User {
         );
     }
 
+    function test_derivative_condenser_invalidParams_reverts()
+        public
+        givenAuctionHasDerivative
+        givenDerivativeHasCondenser
+        givenDerivativeParamsAreInvalid
+    {
+        // Expect revert while decoding parameters
+        vm.expectRevert();
+
+        // Call
+        vm.prank(USER);
+        auctionHouse.sendPayout(lotId, RECIPIENT, payoutAmount, routingParams, auctionOutput);
+    }
+
     function test_derivative_condenser()
         public
         givenAuctionHasDerivative
diff --git a/test/modules/Condenser/MockCondenserModule.sol b/test/modules/Condenser/MockCondenserModule.sol
index 1afd34ca..90711d29 100644
--- a/test/modules/Condenser/MockCondenserModule.sol
+++ b/test/modules/Condenser/MockCondenserModule.sol
@@ -30,10 +30,12 @@ contract MockCondenserModule is CondenserModule {
             abi.decode(auctionOutput_, (MockAtomicAuctionModule.Output));
 
         // Get derivative params
-        (uint256 derivativeTokenId) = abi.decode(derivativeConfig_, (uint256));
+        if (derivativeConfig_.length != 64) revert("");
+        MockDerivativeModule.Params memory originalDerivativeParams =
+            abi.decode(derivativeConfig_, (MockDerivativeModule.Params));
 
         MockDerivativeModule.Params memory derivativeParams = MockDerivativeModule.Params({
-            tokenId: derivativeTokenId,
+            tokenId: originalDerivativeParams.tokenId,
             multiplier: auctionOutput.multiplier
         });
 
diff --git a/test/modules/Derivative/MockDerivativeModule.sol b/test/modules/Derivative/MockDerivativeModule.sol
index b31aa58f..711f5c30 100644
--- a/test/modules/Derivative/MockDerivativeModule.sol
+++ b/test/modules/Derivative/MockDerivativeModule.sol
@@ -9,6 +9,8 @@ import {DerivativeModule} from "src/modules/Derivative.sol";
 
 import {MockERC6909} from "solmate/test/utils/mocks/MockERC6909.sol";
 
+import {console2} from "forge-std/console2.sol";
+
 contract MockDerivativeModule is DerivativeModule {
     bool internal validateFails;
     MockERC6909 internal derivativeToken;
@@ -41,6 +43,8 @@ contract MockDerivativeModule is DerivativeModule {
         uint256 amount_,
         bool wrapped_
     ) external virtual override returns (uint256, address, uint256) {
+        if (params_.length != 64) revert("");
+
         // TODO wrapping
         Params memory params = abi.decode(params_, (Params));