diff --git a/tests/msc_vlr/msc_vlr_test_reject_concurrency.c b/tests/msc_vlr/msc_vlr_test_reject_concurrency.c
index b6f6558..08fc9e7 100644
--- a/tests/msc_vlr/msc_vlr_test_reject_concurrency.c
+++ b/tests/msc_vlr/msc_vlr_test_reject_concurrency.c
@@ -219,6 +219,7 @@
 	ms_sends_msg("05247803305886089910070000006402");
 	VERBOSE_ASSERT(lu_result_sent, == RES_NONE, "%d");
 	VERBOSE_ASSERT(cm_service_result_sent, == RES_NONE, "%d");
+	VERBOSE_ASSERT(dtap_tx_confirmed, == true, "%d");
 	EXPECT_CONN_COUNT(1);
 
 	BTW("The first LU can still complete");
diff --git a/tests/msc_vlr/msc_vlr_test_reject_concurrency.err b/tests/msc_vlr/msc_vlr_test_reject_concurrency.err
index a045e67..c58d099 100644
--- a/tests/msc_vlr/msc_vlr_test_reject_concurrency.err
+++ b/tests/msc_vlr/msc_vlr_test_reject_concurrency.err
@@ -333,6 +333,7 @@
 DREF IMSI:901700000004620: MSC conn use - dtap == 1 (0x4)
   lu_result_sent == 0
   cm_service_result_sent == 0
+  dtap_tx_confirmed == 1
   llist_count(&net->subscr_conns) == 1
 ---
 - The first LU can still complete