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-rw-r--r--src/display/canvas-debug.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/display/canvas-debug.cpp b/src/display/canvas-debug.cpp
index a4ca19673..03db61f69 100644
--- a/src/display/canvas-debug.cpp
+++ b/src/display/canvas-debug.cpp
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* A simple surface for debugging the canvas. Shows how tiles are drawn.
*
@@ -6,7 +7,7 @@
*
* Copyright (C) 2017 Tavmjong Bah
*
- * Released under GNU GPL, read the file 'COPYING' for more information
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "canvas-debug.h"