diff --git a/wp-includes/comment.php b/wp-includes/comment.php
index 87ed753c17..8648a89a0f 100644
--- a/wp-includes/comment.php
+++ b/wp-includes/comment.php
@@ -1912,7 +1912,7 @@ function wp_insert_comment( $commentdata ) {
 	$comment_karma    = ! isset( $data['comment_karma'] ) ? 0 : $data['comment_karma'];
 	$comment_approved = ! isset( $data['comment_approved'] ) ? 1 : $data['comment_approved'];
 	$comment_agent    = ! isset( $data['comment_agent'] ) ? '' : $data['comment_agent'];
-	$comment_type     = ! isset( $data['comment_type'] ) ? 'comment' : $data['comment_type'];
+	$comment_type     = empty( $data['comment_type'] ) ? 'comment' : $data['comment_type'];
 	$comment_parent   = ! isset( $data['comment_parent'] ) ? 0 : $data['comment_parent'];
 
 	$user_id = ! isset( $data['user_id'] ) ? 0 : $data['user_id'];
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 5272d1647b..ea0dc24566 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47625';
+$wp_version = '5.5-alpha-47626';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.