diff --git a/dblayerauthzgroups.php b/dblayerauthzgroups.php
index 87bf3da..e7ea224 100644
--- a/dblayerauthzgroups.php
+++ b/dblayerauthzgroups.php
@@ -89,7 +89,7 @@ class dblayerauthzgroups extends dblayer
         unset ($data[$key]);
       }
       if ($this->primaryKeyAdded === true)
-        unset ($line[$this->primary]);
+        unset ($data[$key][$this->primary]);
     } 
     return $data;
   }