diff --git a/packages/protocol/contracts/layer1/mainnet/rollup/MainnetTierRouter.sol b/packages/protocol/contracts/layer1/mainnet/rollup/MainnetTierRouter.sol
index 954b3be352..1f77863ab6 100644
--- a/packages/protocol/contracts/layer1/mainnet/rollup/MainnetTierRouter.sol
+++ b/packages/protocol/contracts/layer1/mainnet/rollup/MainnetTierRouter.sol
@@ -22,18 +22,14 @@ contract MainnetTierRouter is ITierRouter, TierProviderBase {
 
     /// @inheritdoc ITierProvider
     function getTierIds() external pure returns (uint16[] memory tiers_) {
-        tiers_ = new uint16[](4);
+        tiers_ = new uint16[](3);
         tiers_[0] = LibTiers.TIER_SGX;
-        tiers_[1] = LibTiers.TIER_ZKVM_ANY;
-        tiers_[2] = LibTiers.TIER_GUARDIAN_MINORITY;
-        tiers_[3] = LibTiers.TIER_GUARDIAN;
+        tiers_[1] = LibTiers.TIER_GUARDIAN_MINORITY;
+        tiers_[2] = LibTiers.TIER_GUARDIAN;
     }
 
     /// @inheritdoc ITierProvider
     function getMinTier(address _proposer, uint256 _rand) public view override returns (uint16) {
-        if (_proposer == DAO_FALLBACK_PROPOSER) {
-            return _rand % 500 == 0 ? LibTiers.TIER_ZKVM_ANY : LibTiers.TIER_SGX;
-        }
         return LibTiers.TIER_SGX;
     }
 }