diff --git a/builtin/clone.c b/builtin/clone.c
index 58fee9874f..035ab64950 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -387,7 +387,7 @@ static void clone_local(const char *src_repo, const char *dest_repo)
 static const char *junk_work_tree;
 static const char *junk_git_dir;
 static pid_t junk_pid;
-enum {
+static enum {
 	JUNK_LEAVE_NONE,
 	JUNK_LEAVE_REPO,
 	JUNK_LEAVE_ALL