diff --git a/wp-includes/query.php b/wp-includes/query.php
index 1b2866282d..20a5300b63 100644
--- a/wp-includes/query.php
+++ b/wp-includes/query.php
@@ -3387,8 +3387,8 @@ class WP_Query {
 	 * Is the query for an existing attachment page?
 	 *
 	 * @since 3.1.0
-	 *
-         * @param mixed $attachment Attachment ID, title, slug, or array of such.
+	 * 
+	 * @param mixed $attachment Attachment ID, title, slug, or array of such.
 	 * @return bool
 	 */
 	function is_attachment( $attachment = '' ) {