diff --git a/src/libvlr/vlr_access_req_fsm.c b/src/libvlr/vlr_access_req_fsm.c
index e90d8de..41e629e 100644
--- a/src/libvlr/vlr_access_req_fsm.c
+++ b/src/libvlr/vlr_access_req_fsm.c
@@ -294,6 +294,7 @@
 
 	if (vlr_set_ciph_mode(vsub->vlr, fi, par->msc_conn_ref,
 			      par->ciphering_required,
+			      vlr_use_umts_aka(&vsub->last_tuple->vec, par->is_r99),
 			      vsub->vlr->cfg.retrieve_imeisv_ciphered)) {
 		LOGPFSML(fi, LOGL_ERROR,
 			 "Failed to send Ciphering Mode Command\n");