diff --git a/ppgan/faceutils/dlibutils/dlib_utils.py b/ppgan/faceutils/dlibutils/dlib_utils.py
index 665276da0a5d0acfa18c8de852c20b138b3d0eec..3cfff09ca5df971b8e7c604a7bb3b8d62fc6ea0d 100644
--- a/ppgan/faceutils/dlibutils/dlib_utils.py
+++ b/ppgan/faceutils/dlibutils/dlib_utils.py
@@ -1,16 +1,6 @@
-# Copyright (c) 2020 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.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# code was heavily based on https://github.com/wtjiang98/PSGAN
+# MIT License 
+# Copyright (c) 2020 Wentao Jiang
 
 import os
 import os.path as osp
diff --git a/ppgan/faceutils/mask/face_parser.py b/ppgan/faceutils/mask/face_parser.py
index 38dd9a4d894d0daf8b68e339abde734533b9201c..c01701979914f0643bbc7f898f66002d929e9095 100644
--- a/ppgan/faceutils/mask/face_parser.py
+++ b/ppgan/faceutils/mask/face_parser.py
@@ -1,16 +1,7 @@
-#   Copyright (c) 2020 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.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# code was heavily based on https://github.com/wtjiang98/PSGAN
+# MIT License 
+# Copyright (c) 2020 Wentao Jiang
+
 
 import os.path as osp
 
diff --git a/ppgan/faceutils/mask/model.py b/ppgan/faceutils/mask/model.py
index a61f7979b1a7758b622abda4f49c4eca24cdd8cf..9bb6294047e5b005918aa0dba2871680fbf9bf44 100644
--- a/ppgan/faceutils/mask/model.py
+++ b/ppgan/faceutils/mask/model.py
@@ -1,16 +1,7 @@
-# Copyright (c) 2020 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.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# code was heavily based on https://github.com/wtjiang98/PSGAN
+# MIT License 
+# Copyright (c) 2020 Wentao Jiang
+
 
 import paddle
 import paddle.nn as nn
diff --git a/ppgan/models/discriminators/nlayers.py b/ppgan/models/discriminators/nlayers.py
index 938b1f43ee297333e9b485f434ee242d6ba4ec05..2d8f4d46c9b1e8e5cf802e8606a1e3f8d8031c68 100644
--- a/ppgan/models/discriminators/nlayers.py
+++ b/ppgan/models/discriminators/nlayers.py
@@ -12,6 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# code was heavily based on https://github.com/wtjiang98/PSGAN
+# MIT License 
+# Copyright (c) 2020 Wentao Jiang
+
 import paddle
 import functools
 import numpy as np
diff --git a/ppgan/models/generators/makeup.py b/ppgan/models/generators/makeup.py
index 5f80ae4f4106f6f0bb07af840757d2b02ca3685d..4ac8178fb982a18d932e30a2b767733ffaa67f05 100644
--- a/ppgan/models/generators/makeup.py
+++ b/ppgan/models/generators/makeup.py
@@ -12,6 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# code was heavily based on https://github.com/wtjiang98/PSGAN
+# MIT License 
+# Copyright (c) 2020 Wentao Jiang
+
 import paddle
 import paddle.nn as nn
 import paddle.nn.functional as F
diff --git a/ppgan/models/makeup_model.py b/ppgan/models/makeup_model.py
index c7cb9873a3f698daaf780041952fc778cd7778c3..63868cb8b6d0b03095247a384ca325b3d93de5ba 100644
--- a/ppgan/models/makeup_model.py
+++ b/ppgan/models/makeup_model.py
@@ -11,6 +11,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
+# code was heavily based on https://github.com/wtjiang98/PSGAN
+# MIT License 
+# Copyright (c) 2020 Wentao Jiang
+
 import os
 import numpy as np
 
diff --git a/ppgan/utils/preprocess.py b/ppgan/utils/preprocess.py
index 10613c79211ca8c9ce3ddd7077a7a6687a73e85f..28fc34d870e4c63ab5a7c5738e1d8cf6e24fbce4 100644
--- a/ppgan/utils/preprocess.py
+++ b/ppgan/utils/preprocess.py
@@ -1,16 +1,6 @@
-# Copyright (c) 2020 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.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# code was heavily based on https://github.com/wtjiang98/PSGAN
+# MIT License 
+# Copyright (c) 2020 Wentao Jiang
 
 import cv2
 import numpy as np