diff --git a/paddle/fluid/operators/math/sample_prob.cc b/paddle/fluid/operators/math/sample_prob.cc
index 1a1751d01a1eacf1fe034f0c7c43c70cd93f566d..99aa318453eae161807353198a78e11085cd6237 100644
--- a/paddle/fluid/operators/math/sample_prob.cc
+++ b/paddle/fluid/operators/math/sample_prob.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
+/* Copyright (c) 2019 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.
diff --git a/paddle/fluid/operators/math/sample_prob.cu b/paddle/fluid/operators/math/sample_prob.cu
index ca21f9db88c2b3ceb96114f6ce8f717c7284018e..8f9391591560cc3f76ac67f43121c4b1cff90e12 100644
--- a/paddle/fluid/operators/math/sample_prob.cu
+++ b/paddle/fluid/operators/math/sample_prob.cu
@@ -1,4 +1,4 @@
-/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
+/* Copyright (c) 2019 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.
diff --git a/paddle/fluid/operators/math/sample_prob.h b/paddle/fluid/operators/math/sample_prob.h
index 58d21c63f76cd58f1a72b2a071273eb5bfad0390..e5a6d84cb2b0527c606e62a19ef02d669945ecb1 100644
--- a/paddle/fluid/operators/math/sample_prob.h
+++ b/paddle/fluid/operators/math/sample_prob.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
+/* Copyright (c) 2019 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.