diff --git a/ts/client/src/utils/rpc.ts b/ts/client/src/utils/rpc.ts
index 08281278a..fa4b47a72 100644
--- a/ts/client/src/utils/rpc.ts
+++ b/ts/client/src/utils/rpc.ts
@@ -12,7 +12,7 @@ export async function sendTransaction(
     await connection.getLatestBlockhash(opts.preflightCommitment)
   ).blockhash;
   transaction.feePayer = payer.publicKey;
-  if (opts.additionalSigners.length > 0) {
+  if (opts.additionalSigners?.length > 0) {
     transaction.partialSign(...opts.additionalSigners);
   }