diff --git a/domains/*imrbk123abc.is-cool.dev b/domains/*imrbk123abc.is-cool.dev.json
similarity index 89%
rename from domains/*imrbk123abc.is-cool.dev
rename to domains/*imrbk123abc.is-cool.dev.json
index 6deab2bd..1306bbe1 100644
--- a/domains/*imrbk123abc.is-cool.dev
+++ b/domains/*imrbk123abc.is-cool.dev.json
@@ -2,7 +2,7 @@
     "description": ":D site",
 
     "domain": "is-cool.dev",
-    "subdomain": "imrbk123abc",
+    "subdomain": "*.imrbk123abc",
 
     "owner": {
         "repo": "https://github.com/wadwdwd/register1/",