diff --git a/msc/MSC_Tests.ttcn b/msc/MSC_Tests.ttcn
index 6cb852a..f6e8577 100644
--- a/msc/MSC_Tests.ttcn
+++ b/msc/MSC_Tests.ttcn
@@ -140,11 +140,6 @@
 	charstring mp_mme_name := "mmec01.mmegi0001.mme.epc.mnc070.mcc901.3gppnetwork.org";
 	charstring mp_vlr_name := "vlr.example.net";
 
-	/* Whether to enable osmux tests. Can be dropped completely and enable
-	  unconditionally once new version of osmo-msc is released (current
-	  version: 1.3.1) */
-	boolean mp_enable_osmux_test := true;
-
 	RAN_Configurations mp_bssap_cfg := {
 		{
 			sccp_service_type := "mtp3_itu",
@@ -345,12 +340,10 @@
 	f_vty_config(MSCVTY, "network", "encryption a5 0");
 	f_vty_config(MSCVTY, "cs7 instance 0", "sccp-timer ias " & int2str(g_msc_sccp_timer_ias));
 	f_vty_config(MSCVTY, "cs7 instance 0", "sccp-timer iar " & int2str(g_msc_sccp_timer_iar));
-	if (mp_enable_osmux_test) {
-		if (osmux) {
-			f_vty_config(MSCVTY, "msc", "osmux on");
-		} else {
-			f_vty_config(MSCVTY, "msc", "osmux off");
-		}
+	if (osmux) {
+		f_vty_config(MSCVTY, "msc", "osmux on");
+	} else {
+		f_vty_config(MSCVTY, "msc", "osmux off");
 	}
 }
 
@@ -6361,6 +6354,7 @@
 	execute( TC_lu_and_mt_call() );
 	execute( TC_lu_and_mt_call_ipv6() );
 	execute( TC_lu_and_mt_call_already_paging() );
+	execute( TC_lu_and_mt_call_osmux() );
 
 	execute( TC_lu_and_mo_sms() );
 	execute( TC_lu_and_mt_sms() );
@@ -6447,9 +6441,6 @@
 	/* Run this last: at the time of writing this test crashes the MSC */
 	execute( TC_lu_imsi_auth_tmsi_encr_3_1_log_msc_debug() );
 	execute( TC_mo_cc_bssmap_clear() );
-	if (mp_enable_osmux_test) {
-		execute( TC_lu_and_mt_call_osmux() );
-	}
 	execute( TC_invalid_mgcp_crash() );
 	execute( TC_mm_id_resp_no_identity() );
 	execute( TC_lu_and_expire_while_paging() );