diff --git a/web/projects/start-tunnel/src/app/routes/home/routes/subnets/add.ts b/web/projects/start-tunnel/src/app/routes/home/routes/subnets/add.ts
index 6a25dbb54..8ebae5067 100644
--- a/web/projects/start-tunnel/src/app/routes/home/routes/subnets/add.ts
+++ b/web/projects/start-tunnel/src/app/routes/home/routes/subnets/add.ts
@@ -65,7 +65,7 @@ export class SubnetsAdd {
       [
         Validators.required,
         Validators.pattern(
-          '^(?:(?:25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)/(?:[12]?\\d|3[0-2])$',
+          '^(?:(?:25[0-5]|2[0-4]\\d|1\\d{2}|[1-9]?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|1\\d{2}|[1-9]?\\d)/(?:[0-9]|1\\d|2[0-4])$',
         ),
       ],
     ],