diff --git a/contracts/exchange-libs/contracts/src/LibExchangeRichErrors.sol b/contracts/exchange-libs/contracts/src/LibExchangeRichErrors.sol
index c6b1e7b718..232c744d80 100644
--- a/contracts/exchange-libs/contracts/src/LibExchangeRichErrors.sol
+++ b/contracts/exchange-libs/contracts/src/LibExchangeRichErrors.sol
@@ -71,9 +71,9 @@ library LibExchangeRichErrors {
     bytes4 internal constant SIGNATURE_VALIDATOR_NOT_APPROVED_ERROR_SELECTOR =
         0xa15c0d06;
 
-    // bytes4(keccak256("SignatureValidatorError(bytes32,address,address,bytes,bytes)"))
-    bytes4 internal constant SIGNATURE_VALIDATOR_ERROR_SELECTOR =
-        0xa23838b8;
+    // bytes4(keccak256("EIP1271SignatureError(address,bytes,bytes,bytes)"))
+    bytes4 internal constant EIP1271_SIGNATURE_ERROR_SELECTOR =
+        0x5bd0428d;
 
     // bytes4(keccak256("SignatureWalletError(bytes32,address,bytes,bytes)"))
     bytes4 internal constant SIGNATURE_WALLET_ERROR_SELECTOR =
@@ -164,12 +164,12 @@ library LibExchangeRichErrors {
         return SIGNATURE_VALIDATOR_NOT_APPROVED_ERROR_SELECTOR;
     }
 
-    function SignatureValidatorErrorSelector()
+    function EIP1271SignatureErrorSelector()
         internal
         pure
         returns (bytes4)
     {
-        return SIGNATURE_VALIDATOR_ERROR_SELECTOR;
+        return EIP1271_SIGNATURE_ERROR_SELECTOR;
     }
 
     function SignatureWalletErrorSelector()
@@ -363,10 +363,9 @@ library LibExchangeRichErrors {
         );
     }
 
-    function SignatureValidatorError(
-        bytes32 hash,
-        address signerAddress,
-        address validatorAddress,
+    function EIP1271SignatureError(
+        address verifyingContractAddress,
+        bytes memory data,
         bytes memory signature,
         bytes memory errorData
     )
@@ -375,10 +374,9 @@ library LibExchangeRichErrors {
         returns (bytes memory)
     {
         return abi.encodeWithSelector(
-            SIGNATURE_VALIDATOR_ERROR_SELECTOR,
-            hash,
-            signerAddress,
-            validatorAddress,
+            EIP1271_SIGNATURE_ERROR_SELECTOR,
+            verifyingContractAddress,
+            data,
             signature,
             errorData
         );
@@ -386,7 +384,7 @@ library LibExchangeRichErrors {
 
     function SignatureWalletError(
         bytes32 hash,
-        address signerAddress,
+        address walletAddress,
         bytes memory signature,
         bytes memory errorData
     )
@@ -397,7 +395,7 @@ library LibExchangeRichErrors {
         return abi.encodeWithSelector(
             SIGNATURE_WALLET_ERROR_SELECTOR,
             hash,
-            signerAddress,
+            walletAddress,
             signature,
             errorData
         );
diff --git a/contracts/exchange/contracts/src/libs/LibExchangeRichErrorDecoder.sol b/contracts/exchange/contracts/src/libs/LibExchangeRichErrorDecoder.sol
index da3de9cd3a..81b6f97630 100644
--- a/contracts/exchange/contracts/src/libs/LibExchangeRichErrorDecoder.sol
+++ b/contracts/exchange/contracts/src/libs/LibExchangeRichErrorDecoder.sol
@@ -56,21 +56,20 @@ contract LibExchangeRichErrorDecoder {
     /// @return signerAddress The expected signer of the hash.
     /// @return signature The full signature bytes.
     /// @return errorData The revert data thrown by the validator contract.
-    function decodeSignatureValidatorError(bytes memory encoded)
+    function decodeEIP1271SignatureError(bytes memory encoded)
         public
         pure
         returns (
-            bytes32 hash,
-            address signerAddress,
-            address validatorAddress,
+            address verifyingContractAddress,
+            bytes memory data,
             bytes memory signature,
             bytes memory errorData
         )
     {
-        _assertSelectorBytes(encoded, LibExchangeRichErrors.SignatureValidatorErrorSelector());
-        (hash, signerAddress, validatorAddress, signature, errorData) = abi.decode(
+        _assertSelectorBytes(encoded, LibExchangeRichErrors.EIP1271SignatureErrorSelector());
+        (verifyingContractAddress, data, signature, errorData) = abi.decode(
             encoded.sliceDestructive(4, encoded.length),
-            (bytes32, address, address, bytes, bytes)
+            (address, bytes, bytes, bytes)
         );
     }
 
diff --git a/contracts/exchange/test/lib_exchange_rich_error_decoder.ts b/contracts/exchange/test/lib_exchange_rich_error_decoder.ts
index 0a724e1cb6..bf58515a86 100644
--- a/contracts/exchange/test/lib_exchange_rich_error_decoder.ts
+++ b/contracts/exchange/test/lib_exchange_rich_error_decoder.ts
@@ -61,17 +61,12 @@ blockchainTests.resets('LibExchangeRichErrorDecoder', ({ provider, txDefaults })
         const orderHash = orderUtils.generatePseudoRandomOrderHash();
         const signer = addressUtils.generatePseudoRandomAddress();
         const validator = addressUtils.generatePseudoRandomAddress();
+        const data = hexRandom(ERROR_DATA_LENGTH);
         const signature = hexRandom(SIGNATURE_LENGTH);
         const errorData = hexRandom(ERROR_DATA_LENGTH);
         createDecodeTest(ExchangeRevertErrors.SignatureError, [errorCode, orderHash, signer, signature]);
         createDecodeTest(ExchangeRevertErrors.SignatureValidatorNotApprovedError, [signer, validator]);
-        createDecodeTest(ExchangeRevertErrors.SignatureValidatorError, [
-            orderHash,
-            signer,
-            validator,
-            signature,
-            errorData,
-        ]);
+        createDecodeTest(ExchangeRevertErrors.EIP1271SignatureError, [validator, data, signature, errorData]);
         createDecodeTest(ExchangeRevertErrors.SignatureWalletError, [orderHash, signer, signature, errorData]);
     })();
 
diff --git a/packages/order-utils/src/exchange_revert_errors.ts b/packages/order-utils/src/exchange_revert_errors.ts
index 939a56e8bb..81ae0c2a77 100644
--- a/packages/order-utils/src/exchange_revert_errors.ts
+++ b/packages/order-utils/src/exchange_revert_errors.ts
@@ -88,15 +88,14 @@ export class SignatureWalletError extends RevertError {
     }
 }
 
-export class SignatureValidatorError extends RevertError {
-    constructor(hash?: string, signer?: string, validator?: string, signature?: string, errorData?: string) {
+export class EIP1271SignatureError extends RevertError {
+    constructor(verifyingContractAddress?: string, data?: string, signature?: string, errorData?: string) {
         super(
-            'SignatureValidatorError',
-            'SignatureValidatorError(bytes32 hash, address signer, address validator, bytes signature, bytes errorData)',
+            'EIP1271SignatureError',
+            'EIP1271SignatureError(address verifyingContractAddress, bytes data, bytes signature, bytes errorData)',
             {
-                hash,
-                signer,
-                validator,
+                verifyingContractAddress,
+                data,
                 signature,
                 errorData,
             },
@@ -266,7 +265,7 @@ const types = [
     SignatureError,
     SignatureValidatorNotApprovedError,
     SignatureWalletError,
-    SignatureValidatorError,
+    EIP1271SignatureError,
     InvalidSenderError,
     InvalidTakerError,
     InvalidMakerError,