From a108b1071cc41a74d14753c8213fec683213ba39 Mon Sep 17 00:00:00 2001
From: nxqbao <quocbao300@gmail.com>
Date: Fri, 11 Nov 2022 14:27:40 +0700
Subject: [PATCH] Remove redundant castings (Fix #49)

---
 contracts/ronin/staking/Staking.sol             | 2 +-
 contracts/ronin/validator/RoninValidatorSet.sol | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/contracts/ronin/staking/Staking.sol b/contracts/ronin/staking/Staking.sol
index 918c7783f..9b6122c07 100644
--- a/contracts/ronin/staking/Staking.sol
+++ b/contracts/ronin/staking/Staking.sol
@@ -81,7 +81,7 @@ contract Staking is IStaking, CandidateStaking, DelegatorStaking, Initializable
    * @inheritdoc RewardCalculation
    */
   function _currentPeriod() internal view virtual override returns (uint256) {
-    return IRoninValidatorSet(_validatorContract).currentPeriod();
+    return _validatorContract.currentPeriod();
   }
 
   /**
diff --git a/contracts/ronin/validator/RoninValidatorSet.sol b/contracts/ronin/validator/RoninValidatorSet.sol
index df1a7c2d3..0e7cd95a0 100644
--- a/contracts/ronin/validator/RoninValidatorSet.sol
+++ b/contracts/ronin/validator/RoninValidatorSet.sol
@@ -230,7 +230,7 @@ contract RoninValidatorSet is
     }
 
     if (_slashAmount > 0) {
-      IStaking(_stakingContract).deductStakingAmount(_validatorAddr, _slashAmount);
+      _stakingContract.deductStakingAmount(_validatorAddr, _slashAmount);
     }
 
     emit ValidatorPunished(_validatorAddr, _period, _jailedUntil[_validatorAddr], _slashAmount, true, false);