Index: libraries/PuSHSubscriber.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/feeds/libraries/PuSHSubscriber.inc,v
retrieving revision 1.6
diff -u -p -r1.6 PuSHSubscriber.inc
--- libraries/PuSHSubscriber.inc	21 Mar 2010 16:06:09 -0000	1.6
+++ libraries/PuSHSubscriber.inc	22 Mar 2010 13:49:42 -0000
@@ -276,7 +276,7 @@ class PuSHSubscriber {
    * Helper for loading a subscription.
    */
   protected function loadSubscription() {
-    return call_user_func("{$this->subscription_class}::load", $this->domain, $this->subscriber_id);
+    return call_user_func(array($this->subscription_class, 'load'), $this->domain, $this->subscriber_id);
   }
 
   /**