diff --git a/refs.c b/refs.c
index 2811d8e0534b3bf8fd3ac4ffe6179f3dbce583cf..2cb93e2f7b4dbf86d832751852bb7337f3578efe 100644
--- a/refs.c
+++ b/refs.c
@@ -185,7 +185,7 @@ static void clear_cached_refs(struct cached_refs *ca)
 	ca->did_loose = ca->did_packed = 0;
 }
 
-struct cached_refs *create_cached_refs(const char *submodule)
+static struct cached_refs *create_cached_refs(const char *submodule)
 {
 	int len;
 	struct cached_refs *refs;