diff --git a/lang/en.yml b/lang/en.yml
index a1d9b145..be85d563 100644
--- a/lang/en.yml
+++ b/lang/en.yml
@@ -5,3 +5,7 @@ en:
   SilverStripe\Reports\SideReport:
     OtherGroupTitle: Other
     REPEMPTY: 'The {title} report is empty.'
+  SilverStripe\CMS\Controllers\CMSPageHistoryController:
+    PREVIEW: 'Website preview'
+  SilverStripe\Forms\GridField\GridField:
+    Filter: Filter