diff --git a/libs/Smarty.class.php b/libs/Smarty.class.php
index 07f8912c..fb2d5c5e 100644
--- a/libs/Smarty.class.php
+++ b/libs/Smarty.class.php
@@ -423,7 +423,7 @@ class Smarty extends Smarty_Internal_TemplateBase {
     */
     public function setCachingLifetime($lifetime)
     {
-        $this->caching_lifetime = $lifetime;
+        $this->cache_lifetime = $lifetime;
         return;
     } 
     /**