diff --git a/app/models/account/field.rb b/app/models/account/field.rb
index 4b3ccea9c43..acc073b49c8 100644
--- a/app/models/account/field.rb
+++ b/app/models/account/field.rb
@@ -44,7 +44,7 @@ class Account::Field < ActiveModelSerializers::Model
       parsed_url.user.nil? &&
       parsed_url.password.nil? &&
       parsed_url.host.present? &&
-      parsed_url.normalized_host == parsed_url.host &&
+      parsed_url.normalized_host == parsed_url.host.downcase &&
       (parsed_url.path.empty? || parsed_url.path == parsed_url.normalized_path)
   rescue Addressable::URI::InvalidURIError, IDN::Idna::IdnaError
     false