diff --git a/wp-includes/class-wp-comment-query.php b/wp-includes/class-wp-comment-query.php
index 486faa4e88..ae176bc510 100644
--- a/wp-includes/class-wp-comment-query.php
+++ b/wp-includes/class-wp-comment-query.php
@@ -741,6 +741,7 @@ class WP_Comment_Query {
 
 					case 'comment':
 					case 'comments':
+						$comment_types[ $operator ][] = "''";
 						$comment_types[ $operator ][] = "'comment'";
 						break;
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 9410fa6605..5272d1647b 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47623';
+$wp_version = '5.5-alpha-47625';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.