diff --git a/streaming.c b/streaming.c
index fe54665d86..4b34e2a748 100644
--- a/streaming.c
+++ b/streaming.c
@@ -328,9 +328,9 @@ static int close_istream_pack_non_delta(struct git_istream *st)
 }
 
 static int open_istream_pack_non_delta(struct git_istream *st,
-				       struct repository *r,
-				       const struct object_id *oid,
-				       enum object_type *type)
+				       struct repository *UNUSED(r),
+				       const struct object_id *UNUSED(oid),
+				       enum object_type *UNUSED(type))
 {
 	struct pack_window *window;
 	enum object_type in_pack_type;