diff --git a/apps/core/lib/core/schema/console_instance.ex b/apps/core/lib/core/schema/console_instance.ex
index dcfeb678f..c6c974c3f 100644
--- a/apps/core/lib/core/schema/console_instance.ex
+++ b/apps/core/lib/core/schema/console_instance.ex
@@ -119,7 +119,7 @@ defmodule Core.Schema.ConsoleInstance do
     |> foreign_key_constraint(:owner_id)
     |> unique_constraint(:subdomain)
     |> unique_constraint(:name)
-    |> validate_format(:name, ~r/[a-z][a-z0-9]{5,10}/, message: "must be an alphanumeric string between 5 and 11 characters")
+    |> validate_format(:name, ~r/^[a-z][a-z0-9]{5,10}$/, message: "must be an alphanumeric string between 5 and 11 characters")
     |> validate_region()
   end