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