diff --git a/contracts/interfaces/ISFC.sol b/contracts/interfaces/ISFC.sol
index b86b815..1a5a304 100644
--- a/contracts/interfaces/ISFC.sol
+++ b/contracts/interfaces/ISFC.sol
@@ -49,9 +49,9 @@ interface ISFC {
         returns (
             uint256 status,
             uint256 receivedStake,
+            address auth,
             uint256 createdEpoch,
             uint256 createdTime,
-            address auth,
             uint256 deactivatedTime,
             uint256 deactivatedEpoch
         );
diff --git a/contracts/sfc/SFC.sol b/contracts/sfc/SFC.sol
index 220e084..55a740a 100644
--- a/contracts/sfc/SFC.sol
+++ b/contracts/sfc/SFC.sol
@@ -25,9 +25,9 @@ contract SFC is Initializable, Ownable, Version {
     struct Validator {
         uint256 status;
         uint256 receivedStake; // from all delegators (weight of the validator)
+        address auth; // self-stake delegator
         uint256 createdEpoch;
         uint256 createdTime;
-        address auth; // self-stake delegator
         uint256 deactivatedTime;
         uint256 deactivatedEpoch;
     }