diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index 4a4af7321..05766640b 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -174,8 +174,7 @@ ngx_http_upstream_header_t  ngx_http_upstream_headers_in[] = {
                  ngx_http_upstream_copy_content_type, 0, 1 },
 
     { ngx_string("Content-Length"),
-                 ngx_http_upstream_process_content_length,
-                 offsetof(ngx_http_upstream_headers_in_t, content_length),
+                 ngx_http_upstream_process_content_length, 0,
                  ngx_http_upstream_ignore_header_line, 0, 0 },
 
     { ngx_string("Date"),