diff --git a/lang/en.yml b/lang/en.yml
index 2deb8ffc..3f550dac 100644
--- a/lang/en.yml
+++ b/lang/en.yml
@@ -9,3 +9,7 @@ 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