diff --git a/src/gprs_rlcmac.h b/src/gprs_rlcmac.h
index f193dfa4..589bd8f9 100644
--- a/src/gprs_rlcmac.h
+++ b/src/gprs_rlcmac.h
@@ -90,7 +90,7 @@ int gprs_rlcmac_paging_request(uint8_t *ptmsi, uint16_t ptmsi_len,
 	const char *imsi);
 
 int gprs_rlcmac_rcv_rts_block(struct gprs_rlcmac_bts *bts,
-	uint8_t trx, uint8_t ts, uint16_t arfcn, 
+	uint8_t trx, uint8_t ts,
         uint32_t fn, uint8_t block_nr);
 
 int gprs_alloc_max_dl_slots_per_ms(struct gprs_rlcmac_bts *bts,
diff --git a/src/gprs_rlcmac_sched.cpp b/src/gprs_rlcmac_sched.cpp
index 0367ad02..f4860758 100644
--- a/src/gprs_rlcmac_sched.cpp
+++ b/src/gprs_rlcmac_sched.cpp
@@ -289,7 +289,7 @@ static struct msgb *sched_dummy(void)
 }
 
 int gprs_rlcmac_rcv_rts_block(struct gprs_rlcmac_bts *bts,
-	uint8_t trx, uint8_t ts, uint16_t arfcn,
+	uint8_t trx, uint8_t ts,
         uint32_t fn, uint8_t block_nr)
 {
 	struct gprs_rlcmac_pdch *pdch;
@@ -300,8 +300,6 @@ int gprs_rlcmac_rcv_rts_block(struct gprs_rlcmac_bts *bts,
 	struct msgb *msg = NULL;
 	uint32_t poll_fn, sba_fn;
 
-#warning "ARFCN... it is already in the TRX..... is it consistent with it?"
-
 	if (trx >= 8 || ts >= 8)
 		return -EINVAL;
 	pdch = &bts->trx[trx].pdch[ts];
@@ -370,7 +368,7 @@ int gprs_rlcmac_rcv_rts_block(struct gprs_rlcmac_bts *bts,
 	gprs_bssgp_update_frames_sent();
 
 	/* send PDTCH/PACCH to L1 */
-	pcu_l1if_tx_pdtch(msg, trx, ts, arfcn, fn, block_nr);
+	pcu_l1if_tx_pdtch(msg, trx, ts, bts->trx[trx].arfcn, fn, block_nr);
 
 	return 0;
 }
diff --git a/src/osmo-bts-sysmo/sysmo_l1_if.c b/src/osmo-bts-sysmo/sysmo_l1_if.c
index 165b60cf..75a2d5f3 100644
--- a/src/osmo-bts-sysmo/sysmo_l1_if.c
+++ b/src/osmo-bts-sysmo/sysmo_l1_if.c
@@ -139,7 +139,7 @@ static int handle_ph_readytosend_ind(struct femtol1_hdl *fl1h,
 	case GsmL1_Sapi_Pdtch:
 	case GsmL1_Sapi_Pacch:
 		rc = pcu_rx_rts_req_pdtch(fl1h->trx_no, rts_ind->u8Tn,
-			rts_ind->u16Arfcn, rts_ind->u32Fn, rts_ind->u8BlockNbr);
+			rts_ind->u32Fn, rts_ind->u8BlockNbr);
 	case GsmL1_Sapi_Ptcch:
 		// FIXME
 	default:
diff --git a/src/pcu_l1_if.cpp b/src/pcu_l1_if.cpp
index 790789c8..36cf9adc 100644
--- a/src/pcu_l1_if.cpp
+++ b/src/pcu_l1_if.cpp
@@ -264,11 +264,11 @@ static int pcu_rx_data_cnf(struct gsm_pcu_if_data *data_cnf)
 }
 
 // FIXME: remove this, when changed from c++ to c.
-extern "C" int pcu_rx_rts_req_pdtch(uint8_t trx, uint8_t ts, uint16_t arfcn,
+extern "C" int pcu_rx_rts_req_pdtch(uint8_t trx, uint8_t ts,
 	uint32_t fn, uint8_t block_nr)
 {
 	return gprs_rlcmac_rcv_rts_block(bts_main_data(),
-					trx, ts, arfcn, fn, block_nr);
+					trx, ts, fn, block_nr);
 }
 
 static int pcu_rx_rts_req(struct gsm_pcu_if_rts_req *rts_req)
@@ -282,7 +282,7 @@ static int pcu_rx_rts_req(struct gsm_pcu_if_rts_req *rts_req)
 	switch (rts_req->sapi) {
 	case PCU_IF_SAPI_PDTCH:
 		pcu_rx_rts_req_pdtch(rts_req->trx_nr, rts_req->ts_nr,
-			rts_req->arfcn, rts_req->fn, rts_req->block_nr);
+			rts_req->fn, rts_req->block_nr);
 		break;
 	case PCU_IF_SAPI_PTCCH:
 		/* FIXME */
diff --git a/src/pcu_l1_if.h b/src/pcu_l1_if.h
index 865c833d..b2a9832e 100644
--- a/src/pcu_l1_if.h
+++ b/src/pcu_l1_if.h
@@ -124,7 +124,7 @@ int pcu_sock_send(struct msgb *msg);
 #ifdef __cplusplus
 extern "C" {
 #endif
-int pcu_rx_rts_req_pdtch(uint8_t trx, uint8_t ts, uint16_t arfcn,
+int pcu_rx_rts_req_pdtch(uint8_t trx, uint8_t ts,
 	uint32_t fn, uint8_t block_nr);
 
 int pcu_rx_data_ind_pdtch(uint8_t trx, uint8_t ts, uint8_t *data,
diff --git a/tests/tbf/TbfTest.cpp b/tests/tbf/TbfTest.cpp
index 2f93a6e3..1071ba30 100644
--- a/tests/tbf/TbfTest.cpp
+++ b/tests/tbf/TbfTest.cpp
@@ -206,11 +206,11 @@ static unsigned fn_add_blocks(unsigned fn, unsigned blocks)
 }
 
 static void request_dl_rlc_block(struct gprs_rlcmac_bts *bts,
-	uint8_t trx_no, uint8_t ts_no, uint16_t arfcn,
+	uint8_t trx_no, uint8_t ts_no,
 	uint32_t *fn, uint8_t *block_nr = NULL)
 {
 	uint8_t bn = fn2bn(*fn);
-	gprs_rlcmac_rcv_rts_block(bts, trx_no, ts_no, arfcn, *fn, bn);
+	gprs_rlcmac_rcv_rts_block(bts, trx_no, ts_no, *fn, bn);
 	*fn = fn_add_blocks(*fn, 1);
 	bn += 1;
 	if (block_nr)
@@ -221,7 +221,7 @@ static void request_dl_rlc_block(struct gprs_rlcmac_tbf *tbf,
 	uint32_t *fn, uint8_t *block_nr = NULL)
 {
 	request_dl_rlc_block(tbf->bts->bts_data(), tbf->trx->trx_no,
-		tbf->control_ts, tbf->trx->arfcn, fn, block_nr);
+		tbf->control_ts, fn, block_nr);
 }
 
 enum test_tbf_final_ack_mode {
@@ -636,7 +636,7 @@ static gprs_rlcmac_ul_tbf *establish_ul_tbf_two_phase(BTS *the_bts,
 	bts = the_bts->bts_data();
 
 	/* needed to set last_rts_fn in the PDCH object */
-	request_dl_rlc_block(bts, trx_no, ts_no, 0, fn);
+	request_dl_rlc_block(bts, trx_no, ts_no, fn);
 
 	/* simulate RACH, this sends an Immediate Assignment Uplink on the AGCH */
 	the_bts->rcv_rach(0x73, rach_fn, qta);
@@ -741,7 +741,7 @@ static void transmit_dl_data(BTS *the_bts, uint32_t tlli, uint32_t *fn,
 			if (!(slots & (1 << ts_no)))
 				continue;
 			gprs_rlcmac_rcv_rts_block(the_bts->bts_data(),
-				dl_tbf->trx->trx_no, ts_no, 0,
+				dl_tbf->trx->trx_no, ts_no,
 				*fn, bn);
 		}
 		*fn = fn_add_blocks(*fn, 1);