diff --git a/packages/next/src/server/lib/start-server.ts b/packages/next/src/server/lib/start-server.ts
index 21585afea18b..88de4cf51352 100644
--- a/packages/next/src/server/lib/start-server.ts
+++ b/packages/next/src/server/lib/start-server.ts
@@ -282,9 +282,10 @@ export async function startServer({
           // This is the render worker, we keep the process alive
           console.error(err)
         }
-        process.on('exit', cleanup)
-        process.on('SIGINT', cleanup)
-        process.on('SIGTERM', cleanup)
+        process.on('exit', (code) => cleanup(code))
+        // callback value is signal string, exit with 0
+        process.on('SIGINT', () => cleanup(0))
+        process.on('SIGTERM', () => cleanup(0))
         process.on('uncaughtException', exception)
         process.on('unhandledRejection', exception)