diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index 2deec4819..352587a96 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -363,8 +363,6 @@ ngx_http_upstream_create(ngx_http_request_t *r)
 
     if (u && u->cleanup) {
         ngx_http_upstream_cleanup(r);
-        *u->cleanup = NULL;
-        u->cleanup = NULL;
     }
 
     u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));