diff --git a/src/host/trxcon/l1ctl.c b/src/host/trxcon/l1ctl.c
index 9cd5fe61c..e6f8f826a 100644
--- a/src/host/trxcon/l1ctl.c
+++ b/src/host/trxcon/l1ctl.c
@@ -244,6 +244,8 @@ int l1ctl_tx_rach_conf(struct l1ctl_link *l1l,
 		return -ENOMEM;
 
 	dl = put_dl_info_hdr(msg, NULL);
+	memset(dl, 0x00, sizeof(*dl));
+
 	dl->band_arfcn = htons(band_arfcn);
 	dl->frame_nr = htonl(fn);