diff --git a/package/base-files/files/lib/functions/system.sh b/package/base-files/files/lib/functions/system.sh
index c9f8eb0c31..c7aa7bf75c 100644
--- a/package/base-files/files/lib/functions/system.sh
+++ b/package/base-files/files/lib/functions/system.sh
@@ -1,5 +1,6 @@
 # Copyright (C) 2006-2013 OpenWrt.org
 
+. /lib/functions.sh
 . /usr/share/libubox/jshn.sh
 
 get_mac_binary() {