diff --git a/internal/progress/tracker_test.go b/internal/progress/tracker_test.go
index 9a0d0e1..52b00ee 100644
--- a/internal/progress/tracker_test.go
+++ b/internal/progress/tracker_test.go
@@ -387,3 +387,16 @@ func TestWithAndFrom_ACarriedReporterIsTheOneReturned(t *testing.T) {
 
 	require.Equal(t, domain.StepRunning, stateOf(sink.last(t), "audio"))
 }
+
+func TestTracker_AnnotateAttachesANoteToAStepAndSavesItAtOnce(t *testing.T) {
+	tr, sink, _, _ := newTracker(t)
+	tr.Start()
+	tr.Begin("audio", 0)
+	before := sink.saveCount()
+
+	tr.Annotate("audio", "20 min of the 79 the file claimed")
+
+	require.Equal(t, before+1, sink.saveCount())
+	require.Equal(t, "20 min of the 79 the file claimed", sink.last(t)[0].Note)
+	require.NotPanics(t, func() { tr.Annotate("no-such-step", "x") })
+}