diff --git a/quic/tools/quic_simple_server_backend.h b/quic/tools/quic_simple_server_backend.h
index 74afb60..968ec66 100644
--- a/quic/tools/quic_simple_server_backend.h
+++ b/quic/tools/quic_simple_server_backend.h
@@ -5,6 +5,7 @@
 #ifndef QUICHE_QUIC_TOOLS_QUIC_SIMPLE_SERVER_BACKEND_H_
 #define QUICHE_QUIC_TOOLS_QUIC_SIMPLE_SERVER_BACKEND_H_
 
+#include "net/third_party/quiche/src/quic/core/quic_types.h"
 #include "net/third_party/quiche/src/quic/tools/quic_backend_response.h"
 
 namespace spdy {