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-rw-r--r--src/object/sp-tref.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/object/sp-tref.h b/src/object/sp-tref.h
index 54553d689..c27fe3724 100644
--- a/src/object/sp-tref.h
+++ b/src/object/sp-tref.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SP_TREF_H
#define SP_TREF_H
@@ -12,7 +13,7 @@
*
* Copyright (C) 2007 Gail Banaszkiewicz
*
- * Released under GNU GPL, read the file 'COPYING' for more information
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "sp-item.h"