diff --git a/packages/protocol/contracts/L2/IBlockHash.sol b/packages/protocol/contracts/L2/IBlockHash.sol
index 0bf6e1546f3..c1979a2900a 100644
--- a/packages/protocol/contracts/L2/IBlockHash.sol
+++ b/packages/protocol/contracts/L2/IBlockHash.sol
@@ -5,7 +5,7 @@ pragma solidity ^0.8.27;
 /// @notice Interface for retrieving block hashes.
 interface IBlockHash {
     /// @notice Retrieves the block hash for a given block ID.
-    /// @param blockId The ID of the block whose hash is being requested.
+    /// @param _blockId The ID of the block whose hash is being requested.
     /// @return The block hash of the specified block ID, or 0 if no hash is found.
-    function getBlockHash(uint256 blockId) external view returns (bytes32);
+    function getBlockHash(uint256 _blockId) external view returns (bytes32);
 }
diff --git a/packages/protocol/contracts/L2/TaikoL2.sol b/packages/protocol/contracts/L2/TaikoL2.sol
index 151313ec92c..dd8d33741e0 100644
--- a/packages/protocol/contracts/L2/TaikoL2.sol
+++ b/packages/protocol/contracts/L2/TaikoL2.sol
@@ -277,10 +277,7 @@ contract TaikoL2 is EssentialContract, IBlockHash {
         );
     }
 
-    /// @notice Retrieves the block hash for the given L2 block number.
-    /// @param _blockId The L2 block number to retrieve the block hash for.
-    /// @return The block hash for the specified L2 block id, or zero if the
-    /// block id is greater than or equal to the current block number.
+    /// @inheritdoc IBlockHash
     function getBlockHash(uint256 _blockId) public view returns (bytes32) {
         if (_blockId >= block.number) return 0;
         if (_blockId + 256 >= block.number) return blockhash(_blockId);