diff --git a/domains/firefly.json b/domains/firefly.json
index 65e95e3c6..1b0f4cbed 100644
--- a/domains/firefly.json
+++ b/domains/firefly.json
@@ -4,6 +4,6 @@
         "email": "vibred@pm.me"
     },
     "record": {
-        "NS": "cora.ns.cloudflare.com","jonah.ns.cloudflare.com"
+        "NS": ["cora.ns.cloudflare.com", "jonah.ns.cloudflare.com"]
     }
 }