diff --git a/packages/horizon/contracts/staking/HorizonStaking.sol b/packages/horizon/contracts/staking/HorizonStaking.sol
index c8709e639..45b28d91c 100644
--- a/packages/horizon/contracts/staking/HorizonStaking.sol
+++ b/packages/horizon/contracts/staking/HorizonStaking.sol
@@ -56,7 +56,7 @@ contract HorizonStaking is HorizonStakingBase, IHorizonStakingMain {
     modifier onlyAuthorized(address serviceProvider, address verifier) {
         require(
             _isAuthorized(msg.sender, serviceProvider, verifier),
-            HorizonStakingNotAuthorized(msg.sender, serviceProvider, verifier)
+            HorizonStakingNotAuthorized(serviceProvider, msg.sender, verifier)
         );
         _;
     }