diff --git a/package-lock.json b/package-lock.json
index 564ae15..d963b65 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.21.0-rc17",
+  "version": "0.21.0-rc18",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@orionprotocol/sdk",
-      "version": "0.21.0-rc17",
+      "version": "0.21.0-rc18",
       "hasInstallScript": true,
       "license": "ISC",
       "dependencies": {
diff --git a/package.json b/package.json
index 7a00a36..0ace01f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.21.0-rc17",
+  "version": "0.21.0-rc18",
   "description": "Orion Protocol SDK",
   "main": "./lib/index.cjs",
   "module": "./lib/index.js",
diff --git a/src/constants/lockOrderTypes.ts b/src/constants/lockOrderTypes.ts
index 411d04b..2d00918 100644
--- a/src/constants/lockOrderTypes.ts
+++ b/src/constants/lockOrderTypes.ts
@@ -1,5 +1,5 @@
 export const LOCK_ORDER_TYPES = {
-  Order: [
+  LockOrder: [
     { name: 'sender', type: 'address' },
     { name: 'expiration', type: 'uint64' },
     { name: 'asset', type: 'address' },
diff --git a/src/crypt/getDomainData.ts b/src/crypt/getDomainData.ts
index 2b07742..d3d1445 100644
--- a/src/crypt/getDomainData.ts
+++ b/src/crypt/getDomainData.ts
@@ -19,7 +19,7 @@ function removeUndefined<T>(obj: Record<string, T | undefined>) {
  */
 const getDomainData = (chainId: SupportedChainId) => ({
   ...removeUndefined(EIP712Domain),
-  chainId,
+  chainId: Number(chainId), // check if it broke
 });
 
 export default getDomainData;
diff --git a/src/crypt/signLockOrder.ts b/src/crypt/signLockOrder.ts
index 52d659c..6d75bf4 100644
--- a/src/crypt/signLockOrder.ts
+++ b/src/crypt/signLockOrder.ts
@@ -1,5 +1,5 @@
 import { ethers } from 'ethers';
-import type { LockOrder, SignedLockOrder, SupportedChainId } from '../types.js';
+import type { SupportedChainId, LockOrder, SignedLockOrder } from '../types.js';
 import getDomainData from './getDomainData.js';
 import generateSecret from '../utils/generateSecret';
 import { BigNumber } from 'bignumber.js';