diff --git a/src/http/ngx_http_postpone_filter_module.c b/src/http/ngx_http_postpone_filter_module.c
index ca5cb9e63..1088704c9 100644
--- a/src/http/ngx_http_postpone_filter_module.c
+++ b/src/http/ngx_http_postpone_filter_module.c
@@ -216,7 +216,7 @@ ngx_http_postpone_filter_output_postponed_request(ngx_http_request_t *r)
         r->postponed = r->postponed->next;
     }
 
-    if (r->out) {
+    if (r != r->main && r->out) {
         ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
                        "http postpone filter out again \"%V?%V\"",
                        &r->uri, &r->args);