diff --git a/doc/Market.py b/doc/Market.py
index 16c816b5..7d7c3b64 100644
--- a/doc/Market.py
+++ b/doc/Market.py
@@ -34,7 +34,7 @@ class Market(object):
                     _common.RspHead(),
                 ]
             },
-            {
+               {
                 'name': 'prebuy',
                 'desc': '预购',
                 'group': 'Market',