diff --git a/regression_test/typeCompat/Compat.ttcn b/regression_test/typeCompat/Compat.ttcn
index b24c4e06ebd6fce943c318fb40d4f2d375f82980..832b7aa78fc2d1f12b67f9c3b9ae6f339c156103 100644
--- a/regression_test/typeCompat/Compat.ttcn
+++ b/regression_test/typeCompat/Compat.ttcn
@@ -631,6 +631,7 @@ control {
   var myrec1 rec1 := { 66, 77 }
   var myrec2 rec2 := { 88, 99 }
   execute(tc_MsgPortOps())
+  execute(tc_MsgPortOps_idx());
   execute(tc_ProcPortOps())
   execute(tc_EqNeAss())
   execute(tc_Params())