diff --git a/fluid/PaddleRec/ctr/reader.py b/fluid/PaddleRec/ctr/reader.py
index affd1d0e722ab957bd990b01702d0787c84470bd..6c58d1286b6331b97a09e828c28581e769b246f1 100644
--- a/fluid/PaddleRec/ctr/reader.py
+++ b/fluid/PaddleRec/ctr/reader.py
@@ -13,7 +13,7 @@ class CriteoDataset(Dataset):
         self.continuous_range_ = range(1, 14)
         self.categorical_range_ = range(14, 40)
 
-    def _reader_creator(self, file_list, is_train, trainer_num, trainer_id):
+    def _reader_creator(self, file_list, is_train, trainer_num, trainer_id=0):
         def reader():
             for file in file_list:
                 with open(file, 'r') as f: