diff --git a/locales/ja/browser/browser/zen-workspaces.ftl b/locales/ja/browser/browser/zen-workspaces.ftl
index 7282b56e2..6328c3143 100644
--- a/locales/ja/browser/browser/zen-workspaces.ftl
+++ b/locales/ja/browser/browser/zen-workspaces.ftl
@@ -3,6 +3,8 @@ zen-panel-ui-workspaces-create =
     .label = Create Space
 zen-panel-ui-folder-create = 
     .label = Create Folder
+zen-panel-ui-new-empty-split = 
+    .label = New Split
 zen-workspaces-panel-context-delete = 
     .label = ワークスペースを削除
     .accesskey = D