diff --git a/python/paddle/v2/dataset/common.py b/python/paddle/v2/dataset/common.py
index 8023fa3cf88317337062c2a8b488948a0b12fe41..9c614914b5e372e8e5e3c3c072b18b83edf51e87 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