diff --git a/pcu/PCU_Tests_RAW_SNS.ttcn b/pcu/PCU_Tests_RAW_SNS.ttcn
index 26d8011..c179f07 100644
--- a/pcu/PCU_Tests_RAW_SNS.ttcn
+++ b/pcu/PCU_Tests_RAW_SNS.ttcn
@@ -166,8 +166,8 @@
 	as_rx_bvc_unblock_tx_ack(mp_gb_cfg.bvci, oneshot := true);
 
 	/* wait for one FLOW-CONTROL BVC and then ACK any further in the future */
-	as_rx_bvc_fc_tx_ack(mp_gb_cfg.bvci, oneshot := true, idx := 1);
-	activate(as_rx_bvc_fc_tx_ack(mp_gb_cfg.bvci, idx := 1));
+	as_rx_bvc_fc_tx_ack(mp_gb_cfg.bvci, oneshot := true);
+	activate(as_rx_bvc_fc_tx_ack(mp_gb_cfg.bvci));
 	setverdict(pass);
 }