diff --git a/package.json b/package.json
index d729b48..754ffd8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.18.13",
+  "version": "0.18.14",
   "description": "Orion Protocol SDK",
   "main": "./lib/index.cjs",
   "module": "./lib/index.js",
diff --git a/src/crypt/signCFDOrder.ts b/src/crypt/signCFDOrder.ts
index dcbc17c..65eb3a3 100644
--- a/src/crypt/signCFDOrder.ts
+++ b/src/crypt/signCFDOrder.ts
@@ -26,7 +26,7 @@ export const signCFDOrder = async (
   signer: ethers.Signer,
   chainId: SupportedChainId,
   stopPrice: BigNumber.Value | undefined,
-  isFromDelegate: boolean | undefined,
+  isFromDelegate?: boolean,
 ) => {
   const nonce = Date.now();
   const expiration = nonce + DEFAULT_EXPIRATION;