diff --git a/src/gprs/sgsn_main.c b/src/gprs/sgsn_main.c
index 8cd68ff..fe4192b 100644
--- a/src/gprs/sgsn_main.c
+++ b/src/gprs/sgsn_main.c
@@ -502,8 +502,9 @@
 	}
 
 #if BUILD_IU
+	/* Note that these are mostly defaults and can be overriden from the VTY */
 	sccp = osmo_sccp_simple_client(tall_bsc_ctx, "OsmoSGSN",
-				       2 /* FIXME: configurable */,
+				       (23 << 3) + 4,
 				       OSMO_SS7_ASP_PROT_M3UA,
 				       0, NULL,
 				       0, "127.0.0.1");