diff --git a/openbsc/src/gprs/osmo_sgsn.cfg b/openbsc/src/gprs/osmo_sgsn.cfg
index 6db912a..d3d4bb2 100644
--- a/openbsc/src/gprs/osmo_sgsn.cfg
+++ b/openbsc/src/gprs/osmo_sgsn.cfg
@@ -6,10 +6,10 @@
  no login
 !
 sgsn
-  nsip local port 23000
   ggsn 0 remote-ip 192.168.100.239
   ggsn 0 gtp-version 1
 ns
+ encapsulation udp local-port 23000
  timer tns-block 3
  timer tns-block-retries 3
  timer tns-reset 3