diff --git a/domains/*.sssstf0rest.is-cool.dev.json b/domains/*.sssstf0rest.is-cool.dev.json
index cbb77bf2..5c33969f 100644
--- a/domains/*.sssstf0rest.is-cool.dev.json
+++ b/domains/*.sssstf0rest.is-cool.dev.json
@@ -1,7 +1,7 @@
 {
     "description": "Used for my own website hosted by a Raspberry Pi 5.",
     "domain": "is-cool.dev",
-    "subdomain": "*.sssstf0rest",
+    "subdomain": "sssstf0rest",
     "owner": {
         "repo": "https://github.com/sssstf0rest",
         "email": "haoshen0226@gmail.com"