diff --git a/change_log.txt b/change_log.txt
index 7f85723d..f0a28832 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,6 +1,8 @@
 ===== trunk  =====
 19.10.2011
 - revert PHP4 constructor message
+- fixed PHP4 constructor message
+
 ===== Smarty-3.1.4 =====
 19.10.2011
 - added exception when using PHP4 style constructor
diff --git a/libs/sysplugins/smarty_internal_templatebase.php b/libs/sysplugins/smarty_internal_templatebase.php
index 2471fc82..65f50224 100644
--- a/libs/sysplugins/smarty_internal_templatebase.php
+++ b/libs/sysplugins/smarty_internal_templatebase.php
@@ -751,6 +751,9 @@ abstract class Smarty_Internal_TemplateBase extends Smarty_Internal_Data {
                 return false;
             }
         }
+        if ($name == 'Smarty') {
+            throw new SmartyException("PHP5 requires you to call __construct() instead of Smarty()");
+        }
         // must be unknown
         throw new SmartyException("Call of unknown method '$name'.");
     }