1 files changed, 2 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index cc86136..b76ec19 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: Unlicense
+
 CFLAGS=-Wall -Wextra -Wstrict-prototypes
 
 main: