diff --git a/pywxdump/__init__.py b/pywxdump/__init__.py
index fb4ed0f..804075c 100644
--- a/pywxdump/__init__.py
+++ b/pywxdump/__init__.py
@@ -22,4 +22,4 @@ except:
     VERSION_LIST = {}
     VERSION_LIST_PATH = None
 
-__version__ = "2.4.8"
+__version__ = "2.4.9"
diff --git a/pywxdump/cli.py b/pywxdump/cli.py
index b999f8b..f80e400 100644
--- a/pywxdump/cli.py
+++ b/pywxdump/cli.py
@@ -296,7 +296,7 @@ class MainExportChatRecords():
         # 从命令行参数获取值
         t = args.type
 
-        if t == "txt":
+        if t == "csv":
             try:
                 code, ret = export_csv(args.username, args.outpath, args.msg_path, page_size=10000000)
                 if not code: