From 65d60b9692dc3475b42d14c744d8a5ac0f2b38cf Mon Sep 17 00:00:00 2001
From: Eugenio Lacuesta <1731933+elacuesta@users.noreply.github.com>
Date: Sun, 10 Oct 2021 05:06:36 -0300
Subject: [PATCH] [docs] add missing parameter to headers_received signal
 (#5270)

---
 docs/topics/signals.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/topics/signals.rst b/docs/topics/signals.rst
index a67cc1879..63ad3a9ad 100644
--- a/docs/topics/signals.rst
+++ b/docs/topics/signals.rst
@@ -413,7 +413,7 @@ headers_received
 .. versionadded:: 2.5
 
 .. signal:: headers_received
-.. function:: headers_received(headers, request, spider)
+.. function:: headers_received(headers, body_length, request, spider)
 
     Sent by the HTTP 1.1 and S3 download handlers when the response headers are
     available for a given request, before downloading any additional content.