diff --git a/docs/source/tts/quick_start.md b/docs/source/tts/quick_start.md
index d8dbc646..d2a1b4ec 100644
--- a/docs/source/tts/quick_start.md
+++ b/docs/source/tts/quick_start.md
@@ -79,8 +79,8 @@ checkpoint_name
 ├── snapshot_iter_*.pdz
 ├── speech_stats.npy
 ├── phone_id_map.txt
-├── spk_id_map.txt (optimal)
-└── tone_id_map.txt (optimal)
+├── spk_id_map.txt (optional)
+└── tone_id_map.txt (optional)
 ```
 **Vocoders:**
 ```text