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-rw-r--r--lib/bb/COW.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/bb/COW.py b/lib/bb/COW.py
index 23c22b65e..76bc08a3e 100644
--- a/lib/bb/COW.py
+++ b/lib/bb/COW.py
@@ -3,6 +3,8 @@
#
# Copyright (C) 2006 Tim Ansell
#
+# SPDX-License-Identifier: GPL-2.0-only
+#
# Please Note:
# Be careful when using mutable types (ie Dict and Lists) - operations involving these are SLOW.
# Assign a file to __warn__ to get warnings about slow operations.