diff --git a/backend/app/models/locale.rb b/backend/app/models/locale.rb
index 51f4954..afb7e17 100644
--- a/backend/app/models/locale.rb
+++ b/backend/app/models/locale.rb
@@ -13,7 +13,7 @@ class Locale < ApplicationRecord
     Tag.where.not(id: tag_ids).find_each do
       TagName.create!(tag_id: _1.id,
                       language_code:,
-                      name: TagName.generate_name(self, _1, _1.name),
+                      name: TagName.generate_name!(self, _1, _1.name(language_code)),
                       script_code:,
                       primary_flg: true,
                       # TODO: 公証実装したら書く．
diff --git a/backend/app/models/tag_name.rb b/backend/app/models/tag_name.rb
index 0dc2ebc..80a51cb 100644
--- a/backend/app/models/tag_name.rb
+++ b/backend/app/models/tag_name.rb
@@ -34,7 +34,7 @@ class TagName < ApplicationRecord
     }.uniq
   end
 
-  def self.generate_name locale, tag, name
+  def self.generate_name! locale, tag, name
     # TODO: 言語ごとの自動命名ロジック完成したら書く．
 
     "Tag_##{ tag.id }"