diff --git a/board/Synology/ds414/cmd_syno.c b/board/Synology/ds414/cmd_syno.c
index 59e6fe0..777948f 100644
--- a/board/Synology/ds414/cmd_syno.c
+++ b/board/Synology/ds414/cmd_syno.c
@@ -7,6 +7,7 @@
 
 #include <common.h>
 #include <div64.h>
+#include <env.h>
 #include <spi.h>
 #include <spi_flash.h>
 #include <linux/mtd/mtd.h>