diff --git a/server/websocket.h b/server/websocket.h
index 7707e680..ec452038 100644
--- a/server/websocket.h
+++ b/server/websocket.h
@@ -18,6 +18,10 @@
 #ifndef WEBSOCKET_H_
 #define WEBSOCKET_H_
 
+#include <inttypes.h>
+
+#include "sys-socket.h"
+
 typedef ssize_t (*websocket_read_cb_t)(void *opaque, void *buf, size_t nbyte);
 typedef ssize_t (*websocket_write_cb_t)(void *opaque, const void *buf, size_t nbyte);
 typedef ssize_t (*websocket_writev_cb_t)(void *opaque, struct iovec *iov, int iovcnt);