diff --git a/src/websocket_frame.hpp b/src/websocket_frame.hpp
index b07347c3f5..3c36e04543 100644
--- a/src/websocket_frame.hpp
+++ b/src/websocket_frame.hpp
@@ -36,6 +36,8 @@
 #include "processors/processor.hpp"
 #include "utf8_validator/utf8_validator.hpp"
 
+#include <boost/utility.hpp>
+
 #if defined(WIN32)
 #include <winsock2.h>
 #else