diff --git a/src/main/php/lang/GenericTypes.class.php b/src/main/php/lang/GenericTypes.class.php
index f102c178b6..d1b8291171 100755
--- a/src/main/php/lang/GenericTypes.class.php
+++ b/src/main/php/lang/GenericTypes.class.php
@@ -210,7 +210,8 @@ public function newType0($base, $arguments) {
             array_unshift($state, 4);
             $src.= '{';
             foreach ($placeholders as $placeholder => $type) {
-              $src.= 'static $'.$placeholder.'= "'.$type.'";';
+              $src.= 'static $'.$placeholder.'= null;';
+              $src.= 'if (!$'.$placeholder.') $'.$placeholder.'= Type::forName("'.$type.'");';
             }
             if (isset($annotations[0]['generic']['return'])) {
               $meta[1][$m][DETAIL_RETURNS]= strtr($annotations[0]['generic']['return'], $placeholders);
diff --git a/src/test/php/net/xp_framework/unittest/core/generics/Unserializer.class.php b/src/test/php/net/xp_framework/unittest/core/generics/Unserializer.class.php
index 36cb2d0035..02729d3390 100755
--- a/src/test/php/net/xp_framework/unittest/core/generics/Unserializer.class.php
+++ b/src/test/php/net/xp_framework/unittest/core/generics/Unserializer.class.php
@@ -16,7 +16,6 @@ class Unserializer extends \lang\Object {
    */
   #[@generic(return= 'T')]
   public function newInstance($arg= null) {
-    $type= Type::forName($T);
-    return null === $arg ? $type->default : $type->newInstance($arg);
+    return null === $arg ? $T->default : $T->newInstance($arg);
   }
 }
\ No newline at end of file