diff --git a/contracts/rewards/GenericMultiRewardsVault.sol b/contracts/rewards/GenericMultiRewardsVault.sol
index 4ec702f..bf51824 100644
--- a/contracts/rewards/GenericMultiRewardsVault.sol
+++ b/contracts/rewards/GenericMultiRewardsVault.sol
@@ -112,6 +112,7 @@ contract GenericMultiRewardsVault is ERC4626, Ownable {
     mapping(IERC20 rewardToken => RewardInfo rewardInfo) public rewardInfos;
     mapping(IERC20 rewardToken => address distributor) public distributorInfo;
     mapping(IERC20 rewardToken => uint256 excessRewards) public leftoverRewards;
+    mapping(IERC20 rewardToken => bool isBlocked) public isRewardTokenBlocked;
 
     mapping(address user => mapping(IERC20 rewardToken => uint256 rewardIndex)) public userIndex; // {qRewardTok}
     mapping(address user => mapping(IERC20 rewardToken => uint256 accruedRewards)) public accruedRewards; // {qRewardTok}
@@ -135,6 +136,9 @@ contract GenericMultiRewardsVault is ERC4626, Ownable {
         if (asset() == address(rewardToken)) {
             revert Errors.RewardTokenCanNotBeStakingToken();
         }
+        if (isRewardTokenBlocked[rewardToken]) {
+            revert Errors.RewardTokenBlocked(rewardToken);
+        }
 
         RewardInfo memory rewards = rewardInfos[rewardToken];
         if (rewards.lastUpdatedTimestamp > 0) {
@@ -183,6 +187,9 @@ contract GenericMultiRewardsVault is ERC4626, Ownable {
         if (rewards.lastUpdatedTimestamp == 0) {
             revert Errors.InvalidRewardToken(rewardToken);
         }
+        if (isRewardTokenBlocked[rewardToken]) {
+            revert Errors.RewardTokenAlreadyBlocked(rewardToken);
+        }
         if (_accrue) {
             _accrueRewards(rewardToken, _accrueStatic(rewards));
         }
@@ -190,6 +197,7 @@ contract GenericMultiRewardsVault is ERC4626, Ownable {
         delete rewardInfos[rewardToken];
         delete distributorInfo[rewardToken];
         delete leftoverRewards[rewardToken];
+        isRewardTokenBlocked[rewardToken] = true;
 
         uint256 totalRewardTokens = rewardTokens.length;
 
diff --git a/contracts/rewards/definitions.sol b/contracts/rewards/definitions.sol
index 0eebc08..c883bb6 100644
--- a/contracts/rewards/definitions.sol
+++ b/contracts/rewards/definitions.sol
@@ -15,13 +15,13 @@ struct RewardInfo {
 }
 
 abstract contract Errors {
-    // Reward Token Management
-    error InvalidRewardToken(IERC20 rewardToken);
-
     // Reward Management
+    error InvalidRewardToken(IERC20 rewardToken);
+    error RewardTokenAlreadyBlocked(IERC20 rewardToken);
     error RewardTokenAlreadyExist(IERC20 rewardToken);
     error RewardTokenDoesNotExist(IERC20 rewardToken);
     error RewardTokenCanNotBeStakingToken();
+    error RewardTokenBlocked(IERC20 rewardToken);
     error ZeroAmount();
     error RewardsAreDynamic(IERC20 rewardToken);
     error ZeroRewardsSpeed();