diff --git a/ChatTTS/utils/dl.py b/ChatTTS/utils/dl.py
index a17dd97c6..2cdd64988 100644
--- a/ChatTTS/utils/dl.py
+++ b/ChatTTS/utils/dl.py
@@ -215,7 +215,8 @@ def download_all_assets(tmpdir: str, homedir: str, version="0.2.10"):
                 "0",
                 "-dns",
                 os.path.join(tmpdir, "dns.yaml"),
-                "-H", homedir,
+                "-H",
+                homedir,
                 "assets/chtts",
             ]
         )
diff --git a/examples/api/main.py b/examples/api/main.py
index 90f2f138b..e2f466fa0 100644
--- a/examples/api/main.py
+++ b/examples/api/main.py
@@ -40,7 +40,7 @@ async def startup_event():
     chat = ChatTTS.Chat(get_logger("ChatTTS"))
     chat.normalizer.register("en", normalizer_en_nemo_text())
     chat.normalizer.register("zh", normalizer_zh_tn())
-    
+
     logger.info("Initializing ChatTTS...")
     if chat.load(source="huggingface"):
         logger.info("Models loaded successfully.")