diff --git a/lib/bzip2/Makefile b/lib/bzip2/Makefile
index 929c24e..f0b81ad 100644
--- a/lib/bzip2/Makefile
+++ b/lib/bzip2/Makefile
@@ -1,2 +1,6 @@
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
 obj-y += bzlib.o bzlib_crctable.o bzlib_decompress.o \
 	bzlib_randtable.o bzlib_huffman.o