1 files changed, 2 insertions, 1 deletions
diff --git a/packages/contracts/src/contracts/current/protocol/Exchange/MixinSignatureValidator.sol b/packages/contracts/src/contracts/current/protocol/Exchange/MixinSignatureValidator.sol
index 91e788763..2d04c7c6d 100644
--- a/packages/contracts/src/contracts/current/protocol/Exchange/MixinSignatureValidator.sol
+++ b/packages/contracts/src/contracts/current/protocol/Exchange/MixinSignatureValidator.sol
@@ -96,9 +96,10 @@ contract MixinSignatureValidator is
             );
             isValid = signer == recovered;
             return isValid;
-            
+        
         // Signature using EIP712
         } else if (signatureType == SignatureType.EIP712) {
+            require(signature.length == 66);
             v = uint8(signature[1]);
             r = get32(signature, 2);
             s = get32(signature, 34);