diff --git a/python/paddle/v2/framework/tests/mnist.py b/python/paddle/v2/framework/tests/mnist.py
index 886e99610dd380959b076fbaaa938172a6f66563..eefd5709a3bd7a34c3aaec370690158372562328 100644
--- a/python/paddle/v2/framework/tests/mnist.py
+++ b/python/paddle/v2/framework/tests/mnist.py
@@ -222,7 +222,7 @@ def test(cost_name):
         sum(error) / float(len(error))))
 
 
-PASS_NUM = 1000
+PASS_NUM = 1
 for pass_id in range(PASS_NUM):
     batch_id = 0