diff --git a/paddle/fluid/API.spec b/paddle/fluid/API.spec
index 5e9901bb87c9a454a393a913b6da6e82266ee719..460ada8a0021cfce3bd722d301ff8fe897168457 100644
--- a/paddle/fluid/API.spec
+++ b/paddle/fluid/API.spec
@@ -74,6 +74,7 @@ paddle.fluid.layers.linear_chain_crf ArgSpec(args=['input', 'label', 'param_attr
 paddle.fluid.layers.crf_decoding ArgSpec(args=['input', 'param_attr', 'label'], varargs=None, keywords=None, defaults=(None,))
 paddle.fluid.layers.cos_sim ArgSpec(args=['X', 'Y'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.cross_entropy ArgSpec(args=['input', 'label', 'soft_label', 'ignore_index'], varargs=None, keywords=None, defaults=(False, -100))
+paddle.fluid.layers.teacher_student_sigmoid_loss ArgSpec(args=['input', 'label', 'soft_max_up_bound', 'soft_max_lower_bound'], varargs=None, keywords=None, defaults=(15.0, -15.0))
 paddle.fluid.layers.bpr_loss ArgSpec(args=['input', 'label', 'name'], varargs=None, keywords=None, defaults=(None,))
 paddle.fluid.layers.square_error_cost ArgSpec(args=['input', 'label'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.chunk_eval ArgSpec(args=['input', 'label', 'chunk_scheme', 'num_chunk_types', 'excluded_chunk_types'], varargs=None, keywords=None, defaults=(None,))
diff --git a/paddle/fluid/operators/teacher_student_sigmoid_loss_op.cc b/paddle/fluid/operators/teacher_student_sigmoid_loss_op.cc
index 98eafb9f84e0b6b0e1c7d0a161c1d23cfaef2bc2..4b307140c5df26bd529ed19a14bfa09a96667cec 100644
--- a/paddle/fluid/operators/teacher_student_sigmoid_loss_op.cc
+++ b/paddle/fluid/operators/teacher_student_sigmoid_loss_op.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/paddle/fluid/operators/teacher_student_sigmoid_loss_op.h b/paddle/fluid/operators/teacher_student_sigmoid_loss_op.h
index 77b2760e9cc3d4473f4fb7f4da55b5d5bf11d609..f8e64c4d18b8a30a50c758ed5d1ffcc851dc064c 100644
--- a/paddle/fluid/operators/teacher_student_sigmoid_loss_op.h
+++ b/paddle/fluid/operators/teacher_student_sigmoid_loss_op.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.