Index: imagecache/imagecache.module
===================================================================
--- imagecache/imagecache.module	(revision 20724)
+++ imagecache/imagecache.module	(working copy)
@@ -449,7 +449,7 @@
  * @return
  *   Boolean, TRUE indicating success and FALSE failure.
  */
-function _imagecache_apply_action($action, $image) {
+function _imagecache_apply_action($action, &$image) {
   $actions = imagecache_action_definitions();
 
   if ($definition = imagecache_action_definition($action['action'])) {