diff --git a/src/host/trxcon/sched_lchan_tchf.c b/src/host/trxcon/sched_lchan_tchf.c
index d2cf030ec..788d1532b 100644
--- a/src/host/trxcon/sched_lchan_tchf.c
+++ b/src/host/trxcon/sched_lchan_tchf.c
@@ -136,7 +136,8 @@ int rx_tchf_fn(struct trx_instance *trx, struct trx_ts *ts,
 		sched_send_dt_ind(trx, ts, lchan, l2, GSM_MACBLOCK_LEN,
 			n_errors, false, false);
 
-		/* Send BFI instead of stolen TCH frame */
+		/* Send BFI substituting a stolen TCH frame */
+		n_errors = -1; /* ensure fake measurements */
 		goto bfi;
 	} else {
 		/* A good TCH frame received */
diff --git a/src/host/trxcon/sched_lchan_tchh.c b/src/host/trxcon/sched_lchan_tchh.c
index 599dd2046..013dba94d 100644
--- a/src/host/trxcon/sched_lchan_tchh.c
+++ b/src/host/trxcon/sched_lchan_tchh.c
@@ -315,7 +315,8 @@ int rx_tchh_fn(struct trx_instance *trx, struct trx_ts *ts,
 		sched_send_dt_ind(trx, ts, lchan, l2, GSM_MACBLOCK_LEN,
 			n_errors, false, false);
 
-		/* 1/2 BFI */
+		/* Send BFI substituting 1/2 stolen TCH frames */
+		n_errors = -1; /* ensure fake measurements */
 		goto bfi;
 	} else {
 		/* A good TCH frame received */