diff --git a/board/Synology/ds414/ds414.c b/board/Synology/ds414/ds414.c
index 1a4cea87e1a..02d6a4a1ea8 100644
--- a/board/Synology/ds414/ds414.c
+++ b/board/Synology/ds414/ds414.c
@@ -4,6 +4,7 @@
  * Copyright (C) 2015 Phil Sutter <phil@nwl.cc>
  */
 
+#include <env.h>
 #include <init.h>
 #include <miiphy.h>
 #include <asm/global_data.h>