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-rw-r--r--include/regex.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/regex.h b/include/regex.h
index e8b185cac9a5..6b0838a9bd97 100644
--- a/include/regex.h
+++ b/include/regex.h
@@ -1,4 +1,6 @@
/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
* Copyright (c) 1992 Henry Spencer.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.