diff --git a/progress_test.go b/progress_test.go
index 0afc835..01156b5 100644
--- a/progress_test.go
+++ b/progress_test.go
@@ -262,3 +262,17 @@
 		t.Errorf("Expected buf.Len == 0, got: %d\n", buf.Len())
 	}
 }
+
+func TestAddAfterDone(t *testing.T) {
+	p := mpb.New(mpb.WithOutput(io.Discard))
+	bar := p.AddBar(100)
+	bar.IncrBy(100)
+
+	p.Wait()
+
+	_, err := p.Add(100, nil)
+
+	if err != mpb.DoneError {
+		t.Errorf("Expected %q, got: %q\n", mpb.DoneError, err)
+	}
+}