diff --git a/pcu/PCU_Tests.ttcn b/pcu/PCU_Tests.ttcn
index f42a85b..333a68d 100644
--- a/pcu/PCU_Tests.ttcn
+++ b/pcu/PCU_Tests.ttcn
@@ -1405,7 +1405,7 @@
 	/* Establish an Uplink TBF */
 	f_ms_establish_ul_tbf(ms);
 
-	f_ms_tx_ul_data_block_multi(ms, 5);
+	f_ms_tx_ul_data_block_multi(ms, 5, with_tlli := true);
 	exp_ul_ack_sub := tr_UlAckNackGprs(*, tr_AckNackDescription('1'B), *);
 	exp_ul_ack := tr_RLCMAC_UL_ACK_NACK_GPRS(ms.ul_tbf.tfi, exp_ul_ack_sub);