diff --git a/solidity/contracts/governance/WonderGovernor.sol b/solidity/contracts/governance/WonderGovernor.sol
index 153954d..c5d17e4 100644
--- a/solidity/contracts/governance/WonderGovernor.sol
+++ b/solidity/contracts/governance/WonderGovernor.sol
@@ -305,7 +305,7 @@ abstract contract WonderGovernor is
     address[] memory targets,
     uint256[] memory values,
     bytes[] memory calldatas,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     string memory description
   ) public virtual validProposalType(proposalType) returns (uint256) {
     address proposer = _msgSender();
@@ -316,7 +316,7 @@ abstract contract WonderGovernor is
     }
 
     // check proposal threshold
-    uint256 proposerVotes = getVotes(proposer, proposalType, votesBlockNumber, clock() - 1);
+    uint256 proposerVotes = getVotes(proposer, proposalType, votesBlocknumber, clock() - 1);
     uint256 votesThreshold = proposalThreshold(proposalType);
     if (proposerVotes < votesThreshold) {
       revert GovernorInsufficientProposerVotes(proposer, proposerVotes, votesThreshold);
@@ -560,9 +560,9 @@ abstract contract WonderGovernor is
   /**
    * @dev See {IWonderGovernor-castVote}.
    */
-  function castVote(uint256 proposalId, uint8 support, uint256 votesBlockNumber) public virtual returns (uint256) {
+  function castVote(uint256 proposalId, uint8 support, uint256 votesBlocknumber) public virtual returns (uint256) {
     address voter = _msgSender();
-    return _castVote(proposalId, voter, support, votesBlockNumber, '');
+    return _castVote(proposalId, voter, support, votesBlocknumber, '');
   }
 
   /**
@@ -571,11 +571,11 @@ abstract contract WonderGovernor is
   function castVoteWithReason(
     uint256 proposalId,
     uint8 support,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     string calldata reason
   ) public virtual returns (uint256) {
     address voter = _msgSender();
-    return _castVote(proposalId, voter, support, votesBlockNumber, reason);
+    return _castVote(proposalId, voter, support, votesBlocknumber, reason);
   }
 
   /**
@@ -584,12 +584,12 @@ abstract contract WonderGovernor is
   function castVoteWithReasonAndParams(
     uint256 proposalId,
     uint8 support,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     string calldata reason,
     bytes memory params
   ) public virtual returns (uint256) {
     address voter = _msgSender();
-    return _castVote(proposalId, voter, support, reason, votesBlockNumber, params);
+    return _castVote(proposalId, voter, support, reason, votesBlocknumber, params);
   }
 
   /**
@@ -599,7 +599,7 @@ abstract contract WonderGovernor is
     uint256 proposalId,
     uint8 support,
     address voter,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     bytes memory signature
   ) public virtual returns (uint256) {
     bool valid = SignatureChecker.isValidSignatureNow(
@@ -612,7 +612,7 @@ abstract contract WonderGovernor is
       revert GovernorInvalidSignature(voter);
     }
 
-    return _castVote(proposalId, voter, support, votesBlockNumber, '');
+    return _castVote(proposalId, voter, support, votesBlocknumber, '');
   }
 
   /**
@@ -622,7 +622,7 @@ abstract contract WonderGovernor is
     uint256 proposalId,
     uint8 support,
     address voter,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     string calldata reason,
     bytes memory params,
     bytes memory signature
@@ -649,7 +649,7 @@ abstract contract WonderGovernor is
       revert GovernorInvalidSignature(voter);
     }
 
-    return _castVote(proposalId, voter, support, reason, votesBlockNumber, params);
+    return _castVote(proposalId, voter, support, reason, votesBlocknumber, params);
   }
 
   /**
@@ -662,10 +662,10 @@ abstract contract WonderGovernor is
     uint256 proposalId,
     address account,
     uint8 support,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     string memory reason
   ) internal virtual returns (uint256) {
-    return _castVote(proposalId, account, support, reason, votesBlockNumber, _defaultParams());
+    return _castVote(proposalId, account, support, reason, votesBlocknumber, _defaultParams());
   }
 
   /**
@@ -679,14 +679,14 @@ abstract contract WonderGovernor is
     address account,
     uint8 support,
     string memory reason,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     bytes memory params
   ) internal virtual returns (uint256) {
     _validateStateBitmap(proposalId, _encodeStateBitmap(ProposalState.Active));
 
     uint8 _proposalType = _proposals[proposalId].proposalType;
 
-    uint256 weight = _getVotes(account, _proposalType, votesBlockNumber, proposalSnapshot(proposalId), params);
+    uint256 weight = _getVotes(account, _proposalType, votesBlocknumber, proposalSnapshot(proposalId), params);
     _countVote(proposalId, account, support, weight, params);
 
     if (params.length == 0) {
diff --git a/solidity/interfaces/governance/IWonderGovernor.sol b/solidity/interfaces/governance/IWonderGovernor.sol
index 89d01b0..6e312f8 100644
--- a/solidity/interfaces/governance/IWonderGovernor.sol
+++ b/solidity/interfaces/governance/IWonderGovernor.sol
@@ -330,7 +330,7 @@ interface IWonderGovernor is IERC165, IERC6372 {
     address[] memory targets,
     uint256[] memory values,
     bytes[] memory calldatas,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     string memory description
   ) external returns (uint256 proposalId);
 
@@ -385,7 +385,7 @@ interface IWonderGovernor is IERC165, IERC6372 {
    *
    * Emits a {VoteCast} event.
    */
-  function castVote(uint256 proposalId, uint8 support, uint256 votesBlockNumber) external returns (uint256 balance);
+  function castVote(uint256 proposalId, uint8 support, uint256 votesBlocknumber) external returns (uint256 balance);
 
   /**
    * @dev Cast a vote with a reason
@@ -395,7 +395,7 @@ interface IWonderGovernor is IERC165, IERC6372 {
   function castVoteWithReason(
     uint256 proposalId,
     uint8 support,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     string calldata reason
   ) external returns (uint256 balance);
 
@@ -407,7 +407,7 @@ interface IWonderGovernor is IERC165, IERC6372 {
   function castVoteWithReasonAndParams(
     uint256 proposalId,
     uint8 support,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     string calldata reason,
     bytes memory params
   ) external returns (uint256 balance);
@@ -421,7 +421,7 @@ interface IWonderGovernor is IERC165, IERC6372 {
     uint256 proposalId,
     uint8 support,
     address voter,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     bytes memory signature
   ) external returns (uint256 balance);
 
@@ -435,7 +435,7 @@ interface IWonderGovernor is IERC165, IERC6372 {
     uint256 proposalId,
     uint8 support,
     address voter,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     string calldata reason,
     bytes memory params,
     bytes memory signature
diff --git a/solidity/interfaces/governance/utils/IWonderVotes.sol b/solidity/interfaces/governance/utils/IWonderVotes.sol
index 491be24..91c2ef0 100644
--- a/solidity/interfaces/governance/utils/IWonderVotes.sol
+++ b/solidity/interfaces/governance/utils/IWonderVotes.sol
@@ -78,7 +78,7 @@ interface IWonderVotes {
   function getSnapshotVotes(
     address account,
     uint8 proposalType,
-    uint256 votesBlockNumber,
+    uint256 votesBlocknumber,
     uint256 voteStart
   ) external view returns (uint256);