diff --git a/builtin-setup.c b/builtin-setup.c
index 3c6ad48..1bbdd23 100644
--- a/builtin-setup.c
+++ b/builtin-setup.c
@@ -106,6 +106,7 @@ static const char *guestfs_dirs[] = {
 	"/proc",
 	"/root",
 	"/sys",
+	"/tmp",
 	"/var",
 	"/var/lib",
 	"/virt",