1 files changed, 1 insertions, 0 deletions
diff --git a/scalar.c b/scalar.c
index 552ac8f0d9..363341b957 100644
--- a/scalar.c
+++ b/scalar.c
@@ -289,6 +289,7 @@ static int unregister_dir(void)
 }
 
 /* printf-style interface, expects `<key>=<value>` argument */
+__attribute__((format (printf, 1, 2)))
 static int set_config(const char *fmt, ...)
 {
 	struct strbuf buf = STRBUF_INIT;