diff --git a/lib/private/legacy/template/functions.php b/lib/private/legacy/template/functions.php
index 1b554c2329e01..e28cf02f7a35c 100644
--- a/lib/private/legacy/template/functions.php
+++ b/lib/private/legacy/template/functions.php
@@ -121,6 +121,7 @@ function print_unescaped($string) {
  * @param string $app the appname
  * @param string|string[] $file the filename,
  * if an array is given it will add all scripts
+ * @deprecated 23.1.0
  */
 function script($app, $file = null) {
 	if (is_array($file)) {