diff --git a/openbsc/src/gprs/gprs_sgsn.c b/openbsc/src/gprs/gprs_sgsn.c
index 39bfa84..71cd742 100644
--- a/openbsc/src/gprs/gprs_sgsn.c
+++ b/openbsc/src/gprs/gprs_sgsn.c
@@ -452,7 +452,8 @@
 	return gsm0408_gprs_force_reattach_oldmsg(oldmsg);
 }
 
-void sgsn_update_subscriber_data(struct sgsn_mm_ctx *mmctx)
+void sgsn_update_subscriber_data(struct sgsn_mm_ctx *mmctx,
+				 struct gsm_subscriber *subscr)
 {
 	OSMO_ASSERT(mmctx);