diff --git a/change_log.txt b/change_log.txt
index 61f236e4..46188013 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -3,6 +3,7 @@
 - bugfix compilation did fail when a prefilter did modify an {extends} tag (Forum Topic 23966)
 - bugfix template inheritance could fail if nested {block} tags in childs did contain {$smarty.block.child} (Issue #127)
 - bugfix template inheritance could fail if {block} tags in childs did have similar name as used plugins (Issue #128)
+- enhancement to allow variable constant names like {$smarty.const.{$foo}} (Forum Topic 23970)
 
 06.01.2013
 - Allow '://' URL syntax in template names of stream resources  (Issue #129)
diff --git a/libs/sysplugins/smarty_internal_compile_private_special_variable.php b/libs/sysplugins/smarty_internal_compile_private_special_variable.php
index 986a11c1..af8fcd37 100644
--- a/libs/sysplugins/smarty_internal_compile_private_special_variable.php
+++ b/libs/sysplugins/smarty_internal_compile_private_special_variable.php
@@ -77,7 +77,7 @@ class Smarty_Internal_Compile_Private_Special_Variable extends Smarty_Internal_C
                     $compiler->trigger_template_error("(secure mode) constants not permitted");
                     break;
                 }
-                return '@' . trim($_index[1], "'");
+                return "@constant({$_index[1]})";
 
             case 'config':
                 if (isset($_index[2])) {