diff --git a/src/wp-includes/pluggable.php b/src/wp-includes/pluggable.php
index 8e67accf3f..e26b36ce28 100644
--- a/src/wp-includes/pluggable.php
+++ b/src/wp-includes/pluggable.php
@@ -536,13 +536,14 @@ function wp_mail( $to, $subject, $message, $headers = '', $attachments = array()
 	} catch ( phpmailerException $e ) {
 
 		$mail_error_data = compact( $to, $subject, $message, $headers, $attachments );
+
 		/**
-		 * Fires after a phpmailerException is caught
+		 * Fires after a phpmailerException is caught.
 		 *
 		 * @since 4.4.0
 		 *
-		 * @param WP_Error A WP_Error object with the phpmailerException code, message and an array
-		 *				   containing the mail recipient, subject, message, headers and attachments
+		 * @param WP_Error $error A WP_Error object with the phpmailerException code, message, and an array
+		 *                        containing the mail recipient, subject, message, headers, and attachments.
 		 */
  		do_action( 'wp_mail_failed', new WP_Error( $e->getCode(), $e->getMessage(), $mail_error_data ) );