--- plugins/context_reaction.inc	2009-12-14 14:34:05.000000000 -0800
+++ plugins/context_reaction.inc	2010-04-21 14:53:31.000000000 -0700
@@ -52,9 +52,15 @@ class context_reaction {
    * Retrieve options from the context provided.
    */
   function fetch_from_context($context) {
+    
+    $args['__drupal_alter_by_ref'] = array(
+      &$this, 
+      &$context
+    );
+    
     // Allow other modules to alter the value just before it's returned.
     if (!context_isset('context_ui', 'no_alter')) {
-      drupal_alter('context_reaction_fetch', $this, $context);
+      drupal_alter('context_reaction_fetch', $args);
     }
     return isset($context->reactions[$this->plugin]) ? $context->reactions[$this->plugin] : array();
   }