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-rw-r--r--tools/lib/subcmd/sigchain.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/lib/subcmd/sigchain.c b/tools/lib/subcmd/sigchain.c
index 3537c348a18e..f0fe3dbef7f7 100644
--- a/tools/lib/subcmd/sigchain.c
+++ b/tools/lib/subcmd/sigchain.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <signal.h>
#include "subcmd-util.h"
#include "sigchain.h"