diff --git a/src/domain/synthetics/express/expressOrderUtils.ts b/src/domain/synthetics/express/expressOrderUtils.ts
index 21c808ec54..2c79bcc5fc 100644
--- a/src/domain/synthetics/express/expressOrderUtils.ts
+++ b/src/domain/synthetics/express/expressOrderUtils.ts
@@ -500,7 +500,7 @@ export async function buildAndSignExpressBatchOrderTxn({
     chainId,
     relayPayload: {
       ...relayParamsPayload,
-      userNonce,
+      userNonce: userNonce + 1n,
       deadline: BigInt(nowInSeconds() + DEFAULT_EXPRESS_ORDER_DEADLINE_DURATION),
     },
     paramsLists: getBatchParamsLists(batchParams),