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-rw-r--r--libnetdata/circular_buffer/circular_buffer.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libnetdata/circular_buffer/circular_buffer.h b/libnetdata/circular_buffer/circular_buffer.h
index 9d29a84d70..76e60d34c3 100644
--- a/libnetdata/circular_buffer/circular_buffer.h
+++ b/libnetdata/circular_buffer/circular_buffer.h
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#ifndef CIRCULAR_BUFFER_H
#define CIRCULAR_BUFFER_H 1