diff --git a/ja/source/_templates/layout.html b/ja/source/_templates/layout.html
index 3f8b8b4..3a20da0 100644
--- a/ja/source/_templates/layout.html
+++ b/ja/source/_templates/layout.html
@@ -38,13 +38,6 @@
     <meta property="og:url" content="{{ theme_canonical_url }}{{ pagename }}{{ file_suffix }}" />
     <meta name="twitter:card" content="summary_large_image" />
   {% endif %}
-  <script>
-  {% if language == 'ja' -%}
-    var buttonLabel = 'リンクをコピー';
-  {%- else -%}
-    var buttonLabel = 'Copy link';
-  {%- endif %}
-  </script>
   <script src="{{ pathto('_static/copylink.js', 1) }}"></script>
 {% endblock %}
 {% block content %}