diff --git a/libfdt/Makefile.libfdt b/libfdt/Makefile.libfdt
index 193da8c..e546397 100644
--- a/libfdt/Makefile.libfdt
+++ b/libfdt/Makefile.libfdt
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
 # Makefile.libfdt
 #
 # This is not a complete Makefile of itself.  Instead, it is designed to
diff --git a/libfdt/version.lds b/libfdt/version.lds
index 0d52217..ae32924 100644
--- a/libfdt/version.lds
+++ b/libfdt/version.lds
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause) */
 LIBFDT_1.2 {
 	global:
 		fdt_next_node;