diff --git a/lib/Basic/Base.php b/lib/Basic/Base.php
index 4bfbe29..8d69d1e 100644
--- a/lib/Basic/Base.php
+++ b/lib/Basic/Base.php
@@ -12,6 +12,8 @@
  * @package   Ingo
  */
 
+use Horde\Util\Variables;
+
 /**
  * Base class for basic view pages.
  *
@@ -42,7 +44,7 @@ abstract class Ingo_Basic_Base
 
     /**
      */
-    public function __construct(Horde_Variables $vars)
+    public function __construct(Variables|Horde_Variables $vars)
     {
         $this->vars = $vars;
 
diff --git a/lib/Smartmobile.php b/lib/Smartmobile.php
index b802827..27ae75e 100644
--- a/lib/Smartmobile.php
+++ b/lib/Smartmobile.php
@@ -12,6 +12,8 @@
  * @package  Ingo
  */
 
+use Horde\Util\Variables;
+
 /**
  * Base class for smartmobile view pages.
  *
@@ -34,7 +36,7 @@ class Ingo_Smartmobile
 
     /**
      */
-    public function __construct(Horde_Variables $vars)
+    public function __construct(Variables|Horde_Variables $vars)
     {
         global $notification, $page_output;