diff --git a/adapters/jetpack-search.php b/adapters/jetpack-search.php
index bceb762..d94a21b 100644
--- a/adapters/jetpack-search.php
+++ b/adapters/jetpack-search.php
@@ -23,7 +23,7 @@ protected function query_es( $es_args ) {
 		$jetpack_search = null;
 		
 		if ( class_exists( 'Automattic\Jetpack\Search\Classic_Search' ) ) {
-			$jetpack_search = Automattic\Jetpack\Search\Classic_Search::initialize( get_current_blog_id() );
+			$jetpack_search = Automattic\Jetpack\Search\Classic_Search::initialize( \Automattic\Jetpack\Search\Helper::get_wpcom_site_id() );
 		} else if ( class_exists( 'Jetpack_Search' ) ) {
 			$jetpack_search = Jetpack_Search::instance();