diff --git a/app/assets/templates/header.jst.hbs b/app/assets/templates/header.jst.hbs
index b000f2ae3..3ff029ebe 100644
--- a/app/assets/templates/header.jst.hbs
+++ b/app/assets/templates/header.jst.hbs
@@ -107,7 +107,7 @@
 
   <div id="lightbox">
     <div id="lightbox-content">
-      <a href="#" id="lightbox-close-link">[x] close</a>
+      <a href="#" id="lightbox-close-link">[x] {{t "header.close"}}</a>
       <img id="lightbox-image">
       <div id="lightbox-imageset"></div>
     </div>
diff --git a/config/locales/javascript/javascript.en.yml b/config/locales/javascript/javascript.en.yml
index 298bada11..3b9d4c765 100644
--- a/config/locales/javascript/javascript.en.yml
+++ b/config/locales/javascript/javascript.en.yml
@@ -133,6 +133,7 @@ en:
       recent_notifications: "Recent Notifications"
       mark_all_as_read: "Mark all as read"
       view_all: "View all"
+      close: "close"
 
     viewer:
       stop_following_post: "Stop following post"