diff --git a/bsl.c b/bsl.c
index 14ff813..a9f9dc1 100644
--- a/bsl.c
+++ b/bsl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: BSD-2-Clause
 /*
  * Copyright (c) 2024 Kontron Europe GmbH
  *
diff --git a/bsl.h b/bsl.h
index 117d522..fedccca 100644
--- a/bsl.h
+++ b/bsl.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: BSD-2-Clause
 /*
  * Copyright (c) 2024 Kontron Europe GmbH
  *
diff --git a/common.h b/common.h
index ae75d5c..52f8e6a 100644
--- a/common.h
+++ b/common.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: BSD-2-Clause
 /*
  * Copyright (c) 2024 Kontron Europe GmbH
  *
diff --git a/main.c b/main.c
index d10d27d..037f315 100644
--- a/main.c
+++ b/main.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: BSD-2-Clause
 /*
  * Copyright (c) 2024 Kontron Europe GmbH
  *
diff --git a/script.c b/script.c
index 3bdb78e..ae8d31e 100644
--- a/script.c
+++ b/script.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: BSD-2-Clause
 /*
  * Copyright (c) 2024 Kontron Europe GmbH
  *
diff --git a/script.h b/script.h
index c83cb40..63ff8d7 100644
--- a/script.h
+++ b/script.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 /*
  * Copyright (c) 2024 Kontron Europe GmbH
  *