diff --git a/plugins/selection/EntityReference_SelectionHandler_Generic.class.php b/plugins/selection/EntityReference_SelectionHandler_Generic.class.php
index 7db4045..68819eb 100644
--- a/plugins/selection/EntityReference_SelectionHandler_Generic.class.php
+++ b/plugins/selection/EntityReference_SelectionHandler_Generic.class.php
@@ -331,7 +331,7 @@ class EntityReference_SelectionHandler_Generic_user extends EntityReference_Sele
       // database.
       $conditions = &$query->conditions();
       foreach ($conditions as $key => $condition) {
-        if ($condition['field'] == 'users.name') {
+        if ($key !== '#conjunction' && $condition['field'] == 'users.name') {
           // Remove the condition.
           unset($conditions[$key]);