From a8ddbe41270c67587029dd45ff3cfc7d944d764a Mon Sep 17 00:00:00 2001
From: Lawrence Forman <lawrence@0xproject.com>
Date: Mon, 12 Aug 2019 17:30:24 -0400
Subject: [PATCH] `@0x/contracts-exchange`: Update `IWallet` for new legacy
 wallet spec.

---
 contracts/exchange/contracts/src/interfaces/IWallet.sol | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/contracts/exchange/contracts/src/interfaces/IWallet.sol b/contracts/exchange/contracts/src/interfaces/IWallet.sol
index acb91f4d01..15e34e95a4 100644
--- a/contracts/exchange/contracts/src/interfaces/IWallet.sol
+++ b/contracts/exchange/contracts/src/interfaces/IWallet.sol
@@ -24,15 +24,15 @@ import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";
 
 contract IWallet {
 
-    /// @dev Verifies that a signature is valid.
+    /// @dev Validates a hash with the `Wallet` signature type.
     /// @param hash Message hash that is signed.
     /// @param signature Proof of signing.
-    /// @return Validity of order signature.
+    /// @return `bytes4(0xb0671381)` if the signature check succeeds.
     function isValidSignature(
         bytes32 hash,
         bytes calldata signature
     )
         external
         view
-        returns (bool isValid);
+        returns (bytes4 magicValue);
 }