diff --git a/src/tbf_ul_ass_fsm.c b/src/tbf_ul_ass_fsm.c
index ef75360..90fe828 100644
--- a/src/tbf_ul_ass_fsm.c
+++ b/src/tbf_ul_ass_fsm.c
@@ -64,7 +64,7 @@
 	bitvec_unhex(packet_access_rej, DUMMY_VEC);
 
 	write_packet_access_reject(packet_access_rej, ms_tlli(ms),
-				   osmo_tdef_get(ms->bts->T_defs_bts, 3172, OSMO_TDEF_MS, -1));
+				   osmo_tdef_get(ms->bts->pcu->T_defs, 3172, OSMO_TDEF_MS, -1));
 
 	bts_do_rate_ctr_inc(ms->bts, CTR_PKT_ACCESS_REJ);