diff --git a/src/osmo-bts-litecell15/lc15_l1_if.c b/src/osmo-bts-litecell15/lc15_l1_if.c
index a2189f0..fe9dff1 100644
--- a/src/osmo-bts-litecell15/lc15_l1_if.c
+++ b/src/osmo-bts-litecell15/lc15_l1_if.c
@@ -156,7 +156,7 @@
 	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: