diff --git a/framework/ActiveSync/lib/Horde/ActiveSync/Collections.php b/framework/ActiveSync/lib/Horde/ActiveSync/Collections.php
index 76b1edaa8f6..ecfab2ba7b5 100644
--- a/framework/ActiveSync/lib/Horde/ActiveSync/Collections.php
+++ b/framework/ActiveSync/lib/Horde/ActiveSync/Collections.php
@@ -502,8 +502,8 @@ public function getCollectionClass($id)
         }
 
         // First try existing, loaded collections.
-        if (!empty($this->_collections[$collection['id']])) {
-            return $this->_collections[$collection['id']]['class'];
+        if (!empty($this->_collections[$id])) {
+            return $this->_collections[$id]['class'];
         }
 
         // Next look in the SyncCache.