diff --git a/classes/class-live-update.php b/classes/class-live-update.php
index c029379e0..c23c62fa7 100644
--- a/classes/class-live-update.php
+++ b/classes/class-live-update.php
@@ -202,7 +202,7 @@ public function heartbeat_received( $response, $data ) {
 					$query_args          = json_decode( $data['wp-stream-heartbeat-query'], true );
 					$query_args['paged'] = $total_pages;
 
-					$response['last_page_link'] = add_query_arg( $query_args, admin_url( 'admin.php' ) );
+					$response['last_page_link'] = esc_url( add_query_arg( $query_args, admin_url( 'admin.php' ) ) );
 				} else {
 					$response['total_pages'] = 0;
 				}