diff --git a/examples/shrpx_spdy_upstream.cc b/examples/shrpx_spdy_upstream.cc
index ee6fdf14..2f8a0759 100644
--- a/examples/shrpx_spdy_upstream.cc
+++ b/examples/shrpx_spdy_upstream.cc
@@ -169,7 +169,8 @@ void on_ctrl_recv_callback
       upstream->rst_stream(downstream, SPDYLAY_INTERNAL_ERROR);
       return;
     }
-    if(get_config()->spdy_proxy && scheme) {
+    if(get_config()->spdy_proxy && scheme &&
+       !util::istartsWith(path, scheme)) {
       std::string reqpath = scheme;
       reqpath += "://";
       reqpath += host;