Missing lang string

lang_custom/EN/cms_homesite.ini

@@ -24,6 +24,7 @@ FIRST_REPORTED=First reported
 LAST_REPORTED=Most recently reported
 TIMES_REPORTED=Times reported
 ERROR_SUMMARY=Error summary
+ERROR_REFS_COMPILED=<abbr title="This means the error occurred in a _compiled file, indicating it could (but not always) involve custom code rather than bundled code.">Compiled code?</abbr>
 CMS_SITE_ERROR=Relayed error #{1}
 ERROR_MESSAGE=Error message
 RESOLVED=Resolved?