diff --git a/contracts/BaseEscrowFactory.sol b/contracts/BaseEscrowFactory.sol
index aa36f42..b499964 100644
--- a/contracts/BaseEscrowFactory.sol
+++ b/contracts/BaseEscrowFactory.sol
@@ -77,7 +77,7 @@ abstract contract BaseEscrowFactory is IEscrowFactory, ResolverValidationExtensi
             uint256 partsAmount = uint256(extraDataArgs.hashlockInfo) >> 240;
             if (partsAmount < 2) revert InvalidSecretsAmount();
             bytes32 key = keccak256(abi.encodePacked(orderHash, uint240(uint256(extraDataArgs.hashlockInfo))));
-            LastValidated memory validated = lastValidated[key];
+            ValidationData memory validated = lastValidated[key];
             hashlock = validated.leaf;
             uint256 calculatedIndex = (order.makingAmount - remainingMakingAmount + makingAmount - 1) * partsAmount / order.makingAmount;
             if (
diff --git a/contracts/MerkleStorageInvalidator.sol b/contracts/MerkleStorageInvalidator.sol
index ce27fb6..497d108 100644
--- a/contracts/MerkleStorageInvalidator.sol
+++ b/contracts/MerkleStorageInvalidator.sol
@@ -22,7 +22,7 @@ contract MerkleStorageInvalidator is IMerkleStorageInvalidator, ITakerInteractio
     address private immutable _LIMIT_ORDER_PROTOCOL;
 
     /// @notice See {IMerkleStorageInvalidator-lastValidated}.
-    mapping(bytes32 => LastValidated) public lastValidated;
+    mapping(bytes32 key => ValidationData) public lastValidated;
 
     /// @notice Only limit order protocol can call this contract.
     modifier onlyLOP() {
@@ -63,6 +63,6 @@ contract MerkleStorageInvalidator is IMerkleStorageInvalidator, ITakerInteractio
         if (takerData.idx < lastValidated[key].index) revert InvalidIndex();
         bytes32 rootCalculated = takerData.proof.processProofCalldata(keccak256(abi.encodePacked(takerData.idx, takerData.secretHash)));
         if (uint240(uint256(rootCalculated)) != rootShortened) revert InvalidProof();
-        lastValidated[key] = LastValidated(takerData.idx + 1, takerData.secretHash);
+        lastValidated[key] = ValidationData(takerData.idx + 1, takerData.secretHash);
     }
 }
diff --git a/contracts/interfaces/IMerkleStorageInvalidator.sol b/contracts/interfaces/IMerkleStorageInvalidator.sol
index 72273d6..9fad256 100644
--- a/contracts/interfaces/IMerkleStorageInvalidator.sol
+++ b/contracts/interfaces/IMerkleStorageInvalidator.sol
@@ -7,7 +7,7 @@ pragma solidity 0.8.23;
  * @notice Interface to invalidate hashed secrets from an order that supports multiple fills.
  */
 interface IMerkleStorageInvalidator {
-    struct LastValidated {
+    struct ValidationData {
         uint256 index;
         bytes32 leaf;
     }