diff --git a/osbase/erofs/compression.go b/osbase/erofs/compression.go
index dca9946..984f597 100644
--- a/osbase/erofs/compression.go
+++ b/osbase/erofs/compression.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// 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.
 
 package erofs
 
diff --git a/osbase/erofs/compression_test.go b/osbase/erofs/compression_test.go
index 8d5d656..2e4938e 100644
--- a/osbase/erofs/compression_test.go
+++ b/osbase/erofs/compression_test.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// 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.
 
 package erofs
 
diff --git a/osbase/erofs/defs.go b/osbase/erofs/defs.go
index 85898bf..14fccda 100644
--- a/osbase/erofs/defs.go
+++ b/osbase/erofs/defs.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// 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.
 
 package erofs
 
diff --git a/osbase/erofs/defs_test.go b/osbase/erofs/defs_test.go
index 1d31bff..c1444a2 100644
--- a/osbase/erofs/defs_test.go
+++ b/osbase/erofs/defs_test.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// 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.
 
 package erofs
 
diff --git a/osbase/erofs/erofs.go b/osbase/erofs/erofs.go
index ab87115..fae87ec 100644
--- a/osbase/erofs/erofs.go
+++ b/osbase/erofs/erofs.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// 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.
 
 package erofs
 
diff --git a/osbase/erofs/erofs_test.go b/osbase/erofs/erofs_test.go
index fa5f248..cc02047 100644
--- a/osbase/erofs/erofs_test.go
+++ b/osbase/erofs/erofs_test.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// 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.
 
 package erofs
 
diff --git a/osbase/erofs/inode_types.go b/osbase/erofs/inode_types.go
index 8147892..85d8502 100644
--- a/osbase/erofs/inode_types.go
+++ b/osbase/erofs/inode_types.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// 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.
 
 package erofs
 
diff --git a/osbase/erofs/uncompressed_inode_writer.go b/osbase/erofs/uncompressed_inode_writer.go
index 97aefc0..1e0d21c 100644
--- a/osbase/erofs/uncompressed_inode_writer.go
+++ b/osbase/erofs/uncompressed_inode_writer.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// 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.
 
 package erofs