diff --git a/NEWS b/NEWS
index a0b33864..a8fe98d7 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,4 @@
+  - added $cacheable-parameter to register_compiler_function() (messju)
   - added $cacheable-parameter with default=true to register_function()
     and register_block() (messju)
   - add math speedup to core (Dominik, Monte)
diff --git a/libs/Smarty.class.php b/libs/Smarty.class.php
index 56435740..abc9c8b4 100644
--- a/libs/Smarty.class.php
+++ b/libs/Smarty.class.php
@@ -784,10 +784,10 @@ reques     * @var string
      * @param string $function name of template function
      * @param string $function_impl name of PHP function to register
      */    
-    function register_compiler_function($function, $function_impl)
+    function register_compiler_function($function, $function_impl, $cacheable=true)
     {
         $this->_plugins['compiler'][$function] =
-            array($function_impl, null, null, false);
+            array($function_impl, null, null, false, $cacheable);
     }
 
     /**