diff --git a/srsgnb/src/stack/mac/sched_nr_signalling.cc b/srsgnb/src/stack/mac/sched_nr_signalling.cc
index 3da24f9cc..753203d9c 100644
--- a/srsgnb/src/stack/mac/sched_nr_signalling.cc
+++ b/srsgnb/src/stack/mac/sched_nr_signalling.cc
@@ -114,7 +114,8 @@ bool fill_dci_sib(prb_interval        interv,
   dci.ctx.rnti_type         = srsran_rnti_type_si;
   dci.ctx.rnti              = SRSRAN_SIRNTI;
   dci.ctx.coreset_id        = 0;
-  dci.freq_domain_assigment = srsran_ra_nr_type1_riv(bwp_cfg.cfg.rb_width, interv.start(), interv.length());
+  dci.freq_domain_assigment =
+      srsran_ra_nr_type1_riv(srsran_coreset_get_bw(&bwp_cfg.cfg.pdcch.coreset[0]), interv.start(), interv.length());
   dci.time_domain_assigment = 0;
   dci.tpc                   = 1;
   dci.bwp_id                = bwp_cfg.bwp_id;