diff --git a/openair2/GNB_APP/gnb_config.c b/openair2/GNB_APP/gnb_config.c
index 5238df77fa..518361baf7 100644
--- a/openair2/GNB_APP/gnb_config.c
+++ b/openair2/GNB_APP/gnb_config.c
@@ -1127,7 +1127,7 @@ f1ap_gnb_du_system_info_t *get_sys_info(NR_BCCH_BCH_Message_t *mib, const NR_BCC
 
   sys_info->mib = calloc_or_fail(buf_len, sizeof(*sys_info->mib));
   DevAssert(mib != NULL);
-  sys_info->mib_length = encode_MIB_NR(mib, 0, sys_info->mib, buf_len);
+  sys_info->mib_length = encode_MIB_NR_setup(mib->message.choice.mib, 0, sys_info->mib, buf_len);
   DevAssert(sys_info->mib_length == buf_len);
 
   DevAssert(sib1 != NULL);