diff --git a/src/renderer/utils/validator.js b/src/renderer/utils/validator.js
index 1d4e954a..2cb32a33 100644
--- a/src/renderer/utils/validator.js
+++ b/src/renderer/utils/validator.js
@@ -1 +1 @@
-export const domainFormat = /^[a-zA-Z0-9][a-zA-Z0-9-.]{0,61}[a-zA-Z0-9]\.[a-zA-Z]{2,}$/
+export const domainFormat = /^[a-zA-Z0-9][a-zA-Z0-9-.]{0,61}[a-zA-Z0-9]\.[a-zA-Z0-9]{2,}$/