diff --git a/extern/cuda/cudnn/ops/cudnn_conv_backward_w_op.cc b/extern/cuda/cudnn/ops/cudnn_conv_backward_w_op.cc
index 571f3ec3..d1b76e65 100644
--- a/extern/cuda/cudnn/ops/cudnn_conv_backward_w_op.cc
+++ b/extern/cuda/cudnn/ops/cudnn_conv_backward_w_op.cc
@@ -232,7 +232,7 @@ void CudnnConvBackwardWOp::jit_run() {
                 best_algo_idx=i;
                 break;
             }
-        ASSERT(best_algo_idx!=-1);// TODO: assert error when depthconv
+        ASSERT(best_algo_idx!=-1);
         algo=perf_results[best_algo_idx].algo;
         if (benchmark) {
             bwdw_algo_cache[jk.to_string()] = algo;
diff --git a/python/jittor/depthwise_conv.py b/python/jittor/depthwise_conv.py
index 72eb8f5d..6571837c 100644
--- a/python/jittor/depthwise_conv.py
+++ b/python/jittor/depthwise_conv.py
@@ -1,3 +1,12 @@
+# ***************************************************************
+# Copyright (c) 2020 Jittor. Authors:
+#     Guoye Yang <498731903@qq.com>
+#     Dun Liang <randonlang@gmail.com>.
+#
+# All Rights Reserved.
+# This file is subject to the terms and conditions defined in
+# file 'LICENSE.txt', which is part of this source code package.
+# ***************************************************************
 import jittor as jt
 from jittor import init
 from jittor import nn
diff --git a/python/jittor/test/test_depthwise_conv.py b/python/jittor/test/test_depthwise_conv.py
index c6af5f1e..04465a9f 100644
--- a/python/jittor/test/test_depthwise_conv.py
+++ b/python/jittor/test/test_depthwise_conv.py
@@ -1,5 +1,8 @@
 # ***************************************************************
-# Copyright (c) 2020 Jittor. Authors: Dun Liang <randonlang@gmail.com>. All Rights Reserved.
+# Copyright (c) 2020 Jittor. Authors:
+#     Guoye Yang <498731903@qq.com>
+#     Dun Liang <randonlang@gmail.com>.
+# All Rights Reserved.
 # This file is subject to the terms and conditions defined in
 # file 'LICENSE.txt', which is part of this source code package.
 # ***************************************************************