diff --git a/administrator/modules/mod_latest/src/Helper/LatestHelper.php b/administrator/modules/mod_latest/src/Helper/LatestHelper.php
index bcd93fdfbebf..f0db28fd79ea 100644
--- a/administrator/modules/mod_latest/src/Helper/LatestHelper.php
+++ b/administrator/modules/mod_latest/src/Helper/LatestHelper.php
@@ -31,12 +31,12 @@ abstract class LatestHelper
     /**
      * Get a list of articles.
      *
-     * @param   Registry       &$params  The module parameters.
-     * @param   ArticlesModel  $model    The model.
+     * @param   Registry       $params  The module parameters.
+     * @param   ArticlesModel  $model   The model.
      *
      * @return  mixed  An array of articles, or false on error.
      */
-    public static function getList(Registry &$params, ArticlesModel $model)
+    public static function getList(Registry $params, ArticlesModel $model)
     {
         $user = Factory::getUser();
 
diff --git a/administrator/modules/mod_popular/src/Helper/PopularHelper.php b/administrator/modules/mod_popular/src/Helper/PopularHelper.php
index abbca932e196..ec089cdb54ae 100644
--- a/administrator/modules/mod_popular/src/Helper/PopularHelper.php
+++ b/administrator/modules/mod_popular/src/Helper/PopularHelper.php
@@ -31,14 +31,14 @@ abstract class PopularHelper
     /**
      * Get a list of the most popular articles.
      *
-     * @param   Registry       &$params  The module parameters.
-     * @param   ArticlesModel  $model    The model.
+     * @param   Registry       $params  The module parameters.
+     * @param   ArticlesModel  $model   The model.
      *
      * @return  mixed  An array of articles, or false on error.
      *
      * @throws  \Exception
      */
-    public static function getList(Registry &$params, ArticlesModel $model)
+    public static function getList(Registry $params, ArticlesModel $model)
     {
         $user = Factory::getUser();
 
diff --git a/libraries/src/Versioning/VersionableModelTrait.php b/libraries/src/Versioning/VersionableModelTrait.php
index 73c43bd910d4..02c739217251 100644
--- a/libraries/src/Versioning/VersionableModelTrait.php
+++ b/libraries/src/Versioning/VersionableModelTrait.php
@@ -34,7 +34,7 @@ trait VersionableModelTrait
      *
      * @since   4.0.0
      */
-    public function loadHistory($versionId, Table &$table)
+    public function loadHistory($versionId, Table $table)
     {
         // Only attempt to check the row in if it exists, otherwise do an early exit.
         if (!$versionId) {