diff --git a/channel/chat_channel.py b/channel/chat_channel.py
index 4aa17be..ceada35 100644
--- a/channel/chat_channel.py
+++ b/channel/chat_channel.py
@@ -241,7 +241,7 @@ class ChatChannel(Channel):
                     reply.content = reply_text
                 elif reply.type == ReplyType.ERROR or reply.type == ReplyType.INFO:
                     reply.content = "[" + str(reply.type) + "]\n" + reply.content
-                elif reply.type == ReplyType.IMAGE_URL or reply.type == ReplyType.VOICE or reply.type == ReplyType.IMAGE:
+                elif reply.type == ReplyType.IMAGE_URL or reply.type == ReplyType.VOICE or reply.type == ReplyType.IMAGE or reply.type == ReplyType.FILE:
                     pass
                 else:
                     logger.error("[WX] unknown reply type: {}".format(reply.type))