diff --git a/contracts/identity/IdentityGasRelay.sol b/contracts/identity/IdentityGasRelay.sol
index 6b8068b..8610d12 100644
--- a/contracts/identity/IdentityGasRelay.sol
+++ b/contracts/identity/IdentityGasRelay.sol
@@ -125,7 +125,7 @@ contract IdentityGasRelay is Identity {
      * @notice get callHash
      * @param _to destination of call
      * @param _value call value (ether)
-     * @param _data call data
+     * @param _dataHash call data hash
      * @param _nonce current identity nonce
      * @param _gasPrice price in SNT paid back to msg.sender for each gas unit used
      * @param _gasMinimal minimal amount of gas needed to complete the execution