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-rw-r--r--src/graphlayout.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/graphlayout.cpp b/src/graphlayout.cpp
index 1cb2442e8..6173854d9 100644
--- a/src/graphlayout.cpp
+++ b/src/graphlayout.cpp
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/**
* @file
* Interface between Inkscape code (SPItem) and graphlayout functions.
@@ -9,7 +10,7 @@
*
* Copyright (C) 2005 Authors
*
- * Released under GNU GPL. Read the file 'COPYING' for more information.
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <algorithm>