diff --git a/pcu/GPRS_Components.ttcn b/pcu/GPRS_Components.ttcn
index 2297fb6..4446b63 100644
--- a/pcu/GPRS_Components.ttcn
+++ b/pcu/GPRS_Components.ttcn
@@ -559,7 +559,7 @@
 	}
 }
 
-altstep as_ms_rx_fail_dummy(inout GprsMS ms, template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum)
+altstep as_rx_fail_dummy(template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum)
 runs on MS_BTS_IFACE_CT {
 	var BTS_PDTCH_Block data_msg;
 	[] BTS.receive(tr_PCUIF_DATA_PDTCH(nr.bts_nr,
@@ -961,7 +961,7 @@
 				  block_nr := nr.blk_nr));
 	alt {
 	[exp_container_idx == 0] as_ms_rx_ignore_dummy(ms, nr);
-	[exp_container_idx > 0]	 as_ms_rx_fail_dummy(ms, nr);
+	[exp_container_idx > 0]	 as_rx_fail_dummy(nr);
 	[]	as_ms_rx_pkt_neighbor_cell_data(ms, exp_si, exp_container_idx, si_offset, nr, single_step);
 	[] 	BTS.receive(tr_PCUIF_DATA_PDTCH(nr.bts_nr, tr_PCUIF_DATA(nr.trx_nr, nr.ts_nr, sapi := PCU_IF_SAPI_PDTCH),
 					   tr_RLCMAC_DL_CTRL(?, ?)