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-rw-r--r--src/util/units.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/util/units.cpp b/src/util/units.cpp
index 0308623d5..8c0be134d 100644
--- a/src/util/units.cpp
+++ b/src/util/units.cpp
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Inkscape Units
*
@@ -6,7 +7,7 @@
*
* Copyright (C) 2013 Matthew Petroff
*
- * Released under GNU GPL, read the file 'COPYING' for more information
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <cmath>