1 files changed, 1 insertions, 0 deletions

diff --git a/lib/sort.c b/lib/sort.c
index 975c6ef..d6b7a20 100644
--- a/lib/sort.c
+++ b/lib/sort.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * A fast, small, non-recursive O(nlog n) sort for the Linux kernel
  *