diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index 9cbb5a3..a01784a 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -3011,9 +3011,7 @@
                 return;
             }
 
-            if (u->peer.connection->read->ready || u->length == 0) {
-                ngx_http_upstream_process_non_buffered_upstream(r, u);
-            }
+            ngx_http_upstream_process_non_buffered_upstream(r, u);
         }
 
         return;