1 files changed, 1 insertions, 1 deletions

diff --git a/shallow.c b/shallow.c
index 2531e3af3b..4d0b005d39 100644
--- a/shallow.c
+++ b/shallow.c
@@ -338,7 +338,7 @@ static int advertise_shallow_grafts_cb(const struct commit_graft *graft, void *c
 {
 	int fd = *(int *)cb;
 	if (graft->nr_parent == -1)
-		packet_write(fd, "shallow %s\n", oid_to_hex(&graft->oid));
+		packet_write_fmt(fd, "shallow %s\n", oid_to_hex(&graft->oid));
 	return 0;
 }