5 files changed, 21 insertions, 4 deletions
diff --git a/common/common.c b/common/common.c
index f67f175..e13c214 100644
--- a/common/common.c
+++ b/common/common.c
@@ -1,3 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/* seitan - Syscall Expressive Interpreter, Transformer and Notifier
+ *
+ * common/common.c - Common routines for seitan, seitan-eater and seitan-cooker
+ *
+ * Copyright 2023 Red Hat GmbH
+ * Authors: Alice Frosi <afrosi@redhat.com>
+ *	    Stefano Brivio <sbrivio@redhat.com>
+ */
+
 #define _GNU_SOURCE
 #include <stddef.h>
 #include <stdio.h>
diff --git a/common/common.h b/common/common.h
index 780f756..5844673 100644
--- a/common/common.h
+++ b/common/common.h
@@ -1,3 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later
+* Copyright 2023 Red Hat GmbH
+* Authors: Alice Frosi <afrosi@redhat.com>
+*	   Stefano Brivio <sbrivio@redhat.com>
+*/
+
 #ifndef COMMON_H_
 #define COMMON_H_
 
diff --git a/common/gluten.h b/common/gluten.h
index 9aa721c..53782db 100644
--- a/common/gluten.h
+++ b/common/gluten.h
@@ -1,7 +1,7 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later
+/* SPDX-License-Identifier: GPL-2.0-or-later
 * Copyright 2023 Red Hat GmbH
 * Authors: Alice Frosi <afrosi@redhat.com>
-*          Stefano Brivio <sbrivio@redhat.com>
+*	   Stefano Brivio <sbrivio@redhat.com>
 */
 
 #ifndef COMMON_GLUTEN_H
diff --git a/common/util.c b/common/util.c
index f9423a6..4cb7b7a 100644
--- a/common/util.c
+++ b/common/util.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /* seitan - Syscall Expressive Interpreter, Transformer and Notifier
  *
diff --git a/common/util.h b/common/util.h
index ad2192b..b11edb6 100644
--- a/common/util.h
+++ b/common/util.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2023 Red Hat GmbH
  * Author: Stefano Brivio <sbrivio@redhat.com>
  */