diff --git a/python/paddle/v2/dataset/common.py b/python/paddle/v2/dataset/common.py
index 8023fa3cf8..9c614914b5 100644
--- a/python/paddle/v2/dataset/common.py
+++ b/python/paddle/v2/dataset/common.py
@@ -155,7 +155,7 @@ def convert(output_path,
             reader,
             num_shards,
             name_prefix,
-            max_lines_to_shuffle=10000):
+            max_lines_to_shuffle=1000):
     import recordio
     import cPickle as pickle
     import random