diff --git a/openbsc/doc/examples/osmo-bsc_nat/osmo-bsc_nat.cfg b/openbsc/doc/examples/osmo-bsc_nat/osmo-bsc_nat.cfg
index 78eb4ba..737d104 100644
--- a/openbsc/doc/examples/osmo-bsc_nat/osmo-bsc_nat.cfg
+++ b/openbsc/doc/examples/osmo-bsc_nat/osmo-bsc_nat.cfg
@@ -62,6 +62,7 @@
  timeout ping 20
  timeout pong 5
  ip-dscp 0
+ access-list bla imsi-allow ^11$
 
  bsc 0
   token bla