diff --git a/common/envs/constants.ts b/common/envs/constants.ts
index 0a779b90..4580afc8 100644
--- a/common/envs/constants.ts
+++ b/common/envs/constants.ts
@@ -36,7 +36,7 @@ export const CORS_ORIGIN_MANIFOLD = new RegExp(
 )
 // Vercel deployments, used for testing.
 export const CORS_ORIGIN_VERCEL = new RegExp(
-  '^https?://(?:[a-zA-Z0-9\\-]+\\.)*' + escapeRegExp('mantic.vercel.app') + '$'
+  '^https?://(?:[a-zA-Z0-9\\-]+)*' + escapeRegExp('mantic.vercel.app') + '$'
 )
 // Any localhost server on any port
 export const CORS_ORIGIN_LOCALHOST = /^http:\/\/localhost:\d+$/