diff --git a/src/wp-includes/l10n.php b/src/wp-includes/l10n.php
index d6904ab2d9..bd57378a5d 100644
--- a/src/wp-includes/l10n.php
+++ b/src/wp-includes/l10n.php
@@ -767,10 +767,11 @@ function load_default_textdomain( $locale = null ) {
  * @since 1.5.0
  * @since 4.6.0 The function now tries to load the .mo file from the languages directory first.
  *
- * @param string $domain          Unique identifier for retrieving translated strings
- * @param string $deprecated      Optional. Use the $plugin_rel_path parameter instead. Default false.
- * @param string $plugin_rel_path Optional. Relative path to WP_PLUGIN_DIR where the .mo file resides.
- *                                Default false.
+ * @param string       $domain          Unique identifier for retrieving translated strings
+ * @param string|false $deprecated      Optional. Deprecated. Use the $plugin_rel_path parameter instead.
+ *                                      Default false.
+ * @param string|false $plugin_rel_path Optional. Relative path to WP_PLUGIN_DIR where the .mo file resides.
+ *                                      Default false.
  * @return bool True when textdomain is successfully loaded, false otherwise.
  */
 function load_plugin_textdomain( $domain, $deprecated = false, $plugin_rel_path = false ) {