From c2a77f16221f167009f2a2d2db15eff63d4ec9ce Mon Sep 17 00:00:00 2001
From: Andrew Jiang <andrewjiang@hey.com>
Date: Tue, 17 Dec 2024 22:19:11 -0500
Subject: [PATCH] Update router.ts

Co-authored-by: JJ Kasper <jj@jjsweb.site>
---
 packages/next/src/shared/lib/router/router.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/next/src/shared/lib/router/router.ts b/packages/next/src/shared/lib/router/router.ts
index 42d2784c3e916..9751783208f9c 100644
--- a/packages/next/src/shared/lib/router/router.ts
+++ b/packages/next/src/shared/lib/router/router.ts
@@ -499,7 +499,7 @@ function fetchNextData({
         {} as HeadersInit,
         isPrefetch ? { purpose: 'prefetch' } : {},
         isPrefetch && hasMiddleware ? { 'x-middleware-prefetch': '1' } : {},
-        { 'x-deployment-id': process.env.NEXT_DEPLOYMENT_ID }
+        process.env.NEXT_DEPLOYMENT_ID ? { 'x-deployment-id': process.env.NEXT_DEPLOYMENT_ID } : {}
       ),
       method: params?.method ?? 'GET',
     })