diff --git a/core/includes/module.inc b/core/includes/module.inc
index 1ee1744..fb18a9d 100644
--- a/core/includes/module.inc
+++ b/core/includes/module.inc
@@ -123,7 +123,7 @@ function module_load_install($module) {
  *   (optional) The base file name (without the $type extension). If omitted,
  *   $module is used; i.e., resulting in "$module.$type" by default.
  *
- * @return bool
+ * @return string|bool
  *   The name of the included file, if successful; FALSE otherwise.
  *
  * @deprecated in Drupal 8.x, will be removed before Drupal 9.0.