diff --git a/contracts/ECRecovery.sol b/contracts/ECRecovery.sol
index 3876ca6e8..9af0100f4 100644
--- a/contracts/ECRecovery.sol
+++ b/contracts/ECRecovery.sol
@@ -10,7 +10,7 @@ pragma solidity ^0.4.18;
 library ECRecovery {
 
   /**
-   * @dev Recover signer address from a message by using his signature
+   * @dev Recover signer address from a message by using their signature
    * @param hash bytes32 message, the hash is the signed message. What is recovered is the signer address.
    * @param sig bytes signature, the signature is generated using web3.eth.sign()
    */