diff --git a/src/argument.cpp b/src/argument.cpp
index 6d1273f..127780c 100644
--- a/src/argument.cpp
+++ b/src/argument.cpp
@@ -1,18 +1,6 @@
-/**
- * Copyright © 2018 IBM Corporation
- *
- * 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.
- */
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: Copyright 2018 IBM Corporation
+
 #include "argument.hpp"
 
 #include <iostream>
diff --git a/src/ncsi_cmd.cpp b/src/ncsi_cmd.cpp
index 34f5c92..e6cf534 100644
--- a/src/ncsi_cmd.cpp
+++ b/src/ncsi_cmd.cpp
@@ -1,19 +1,7 @@
-/**
- * Copyright © 2018 IBM Corporation
- * Copyright © 2024 Code Construct
- *
- * 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.
- */
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: Copyright 2018 IBM Corporation
+// SPDX-FileCopyrightText: Copyright 2024 Code Construct
+
 #include "ncsi_util.hpp"
 
 #include <assert.h>
diff --git a/src/ncsi_netlink_main.cpp b/src/ncsi_netlink_main.cpp
index f8c01d8..90393a5 100644
--- a/src/ncsi_netlink_main.cpp
+++ b/src/ncsi_netlink_main.cpp
@@ -1,18 +1,6 @@
-/**
- * Copyright © 2018 IBM Corporation
- *
- * 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.
- */
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: Copyright 2018 IBM Corporation
+
 #include "argument.hpp"
 #include "ncsi_util.hpp"