diff --git a/python/paddle/v2/dataset/imdb.py b/python/paddle/v2/dataset/imdb.py
index 93dd3e8f7d3a569eaf56335f0f92bed04c0ee26c..cfc1c886e1389c15e3f803c341b6f62dd7b4bf41 100644
--- a/python/paddle/v2/dataset/imdb.py
+++ b/python/paddle/v2/dataset/imdb.py
@@ -116,7 +116,7 @@ def reader_creator(pos_pattern, neg_pattern, word_idx, buffer_size):
             yield [word_idx.get(w, UNK) for w in doc], i % 2
             doc = qs[i % 2].get()
 
-    return reader()
+    return reader
 
 
 def train(word_idx):