$title = SpecialPage::getTitleFor( 'Search' );
$template = $title->escapeFullURL( 'search={searchTerms}' );
-$suggest = htmlspecialchars($wgServer . $wgScriptPath . '/api.php?action=opensearch&search={searchTerms}');
+$suggest = htmlspecialchars(SearchEngine::getOpenSearchTemplate() );
$response = $wgRequest->response();