diff --git a/packages/console/app/src/routes/zen/util/handler.ts b/packages/console/app/src/routes/zen/util/handler.ts
index ddeafa5265..37629b31a7 100644
--- a/packages/console/app/src/routes/zen/util/handler.ts
+++ b/packages/console/app/src/routes/zen/util/handler.ts
@@ -196,7 +196,7 @@ export async function handler(
           providerInfo.modifyHeaders(headers, providerInfo.apiKey, stickyId)
           Object.entries(providerInfo.headerModifier ?? {}).forEach(([k, v]) => {
             if (v === "$ip") return headers.set(k, ip)
-            if (v === "$caller") return headers.set(k, `caller:${ip}`)
+            if (v === "$caller") return headers.set(k, stickyId)
             if (v === "$session") return headers.set(k, sessionId)
             if (v === "$model") return headers.set(k, model)
             if (v === "$request") return headers.set(k, requestId)