diff --git a/main.py b/main.py
index 9376d4b..892437a 100644
--- a/main.py
+++ b/main.py
@@ -443,7 +443,7 @@ def kp(event_data):
                                                         # from_wxid=wxid,
                                                         from_wxid=group,
                                                         msg="testgroup",
-                                                        wx_list=[wxid])
+                                                        wx_list=wxid)
                 else:
                     pass
             else: