diff --git a/includes/class-wc-emails.php b/includes/class-wc-emails.php
index cf1929e6fb8..f13c779c035 100644
--- a/includes/class-wc-emails.php
+++ b/includes/class-wc-emails.php
@@ -84,7 +84,8 @@ class WC_Emails {
 	 */
 	public static function send_transactional_email() {
 		self::instance();
-		do_action_ref_array( current_filter() . '_notification', func_get_args() );
+		$args = func_get_args();
+		do_action_ref_array( current_filter() . '_notification', $args );
 	}
 
 	/**