diff --git a/src/shrpx_spdy_downstream_connection.cc b/src/shrpx_spdy_downstream_connection.cc
index 0ebfca21..4f911491 100644
--- a/src/shrpx_spdy_downstream_connection.cc
+++ b/src/shrpx_spdy_downstream_connection.cc
@@ -30,7 +30,7 @@
 
 #include <event2/bufferevent_ssl.h>
 
-#include <http-parser/http_parser.h>
+#include "http-parser/http_parser.h"
 
 #include "shrpx_client_handler.h"
 #include "shrpx_upstream.h"