// XXX: in the future, this could be stored as structured data, defining a list of book sources
$text = $content->getNativeData();
- $out->addWikiText( str_replace( 'MAGICNUMBER', $isbn, $text ) );
+ $out->addWikiTextAsInterface( str_replace( 'MAGICNUMBER', $isbn, $text ) );
return true;
} else {