diff --git a/tests/subchan_demux/subchan_demux_test.ok b/tests/subchan_demux/subchan_demux_test.ok
new file mode 100644
index 0000000..756f25e
--- /dev/null
+++ b/tests/subchan_demux/subchan_demux_test.ok
@@ -0,0 +1,3 @@
+Testing the subchannel demux.
+Testing the csd sync.
+No crashes.