diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 003df49..0e76476 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -136,7 +136,7 @@
 		      meas_bw := meas_bw);
 
 /* tr_EUTRAN_NeighbourCells with defaults used in BSC_Tests.ttcn */
-template EUTRAN_NeighbourCells tr_EUTRAN_NeighbourCells_default(template EUTRAN_CellDescs cell_desc_list := { tr_EUTRAN_CellDesc_default },
+template EUTRAN_NeighbourCells tr_EUTRAN_NeighbourCells_default(template (present) EUTRAN_CellDescs cell_desc_list := { tr_EUTRAN_CellDesc_default },
 								template uint3_t prio := 3,
 								template (present) uint5_t thresh_high := 20,
 								template uint5_t thresh_low := 10,
@@ -978,7 +978,7 @@
 }
 
 /* expect to receive a RSL message matching a specified template on a given BTS / stream */
-function f_exp_ipa_rx(integer bts_nr, template RSL_Message t_rx, float t_secs := 2.0, IpaStreamId sid := IPAC_PROTO_RSL_TRX0)
+function f_exp_ipa_rx(integer bts_nr, template (present) RSL_Message t_rx, float t_secs := 2.0, IpaStreamId sid := IPAC_PROTO_RSL_TRX0)
 runs on test_CT return RSL_Message {
 	var ASP_RSL_Unitdata rx_rsl_ud;
 	timer T := t_secs;
@@ -998,7 +998,7 @@
 }
 
 /* helper function to transmit RSL on a given BTS/stream */
-function f_ipa_tx(integer bts_nr, template RSL_Message t_tx, IpaStreamId sid := IPAC_PROTO_RSL_TRX0)
+function f_ipa_tx(integer bts_nr, template (value) RSL_Message t_tx, IpaStreamId sid := IPAC_PROTO_RSL_TRX0)
 runs on test_CT {
 	IPA_RSL[bts_nr].send(ts_ASP_RSL_UD(t_tx, sid));
 }