diff --git a/package/ppp/ipkg/ppp-pppoe-plugin/etc/ppp/ip-up b/package/ppp/ipkg/ppp-pppoe-plugin/etc/ppp/ip-up
index 6cb950c8b..4c2881163 100755
--- a/package/ppp/ipkg/ppp-pppoe-plugin/etc/ppp/ip-up
+++ b/package/ppp/ipkg/ppp-pppoe-plugin/etc/ppp/ip-up
@@ -1,2 +1,2 @@
 #!/bin/sh
-/usr/sbin/rdate $(nvram get ntp_server)
+/usr/sbin/rdate $(/usr/sbin/nvram get ntp_server)