--- a/src/http/ngx_http_header_filter.c
+++ b/src/http/ngx_http_header_filter.c
@@ -33,9 +33,6 @@ ngx_module_t  ngx_http_header_filter_mod
 };
 
 
-static ngx_http_output_body_filter_pt    write_filter;
-
-
 static char server_string[] = "Server: " NGINX_VER CRLF;
 
 
@@ -358,7 +355,7 @@ static ngx_int_t ngx_http_header_filter(
     ln->buf = b;
     ln->next = NULL;
 
-    return write_filter(r, ln);
+    return ngx_http_write_filter(r, ln);
 }
 
 
@@ -366,7 +363,5 @@ static ngx_int_t ngx_http_header_filter_
 {
     ngx_http_top_header_filter = ngx_http_header_filter;
 
-    write_filter = ngx_http_top_body_filter;
-
     return NGX_OK;
 }