diff --git a/www/class/centreonWidget/Params/Connector/Poller.class.php b/www/class/centreonWidget/Params/Connector/Poller.class.php
index fa21c43c247..bb3b2aba393 100644
--- a/www/class/centreonWidget/Params/Connector/Poller.class.php
+++ b/www/class/centreonWidget/Params/Connector/Poller.class.php
@@ -48,6 +48,7 @@ public function getListValues($paramId)
         static $tab;
 
         if (! isset($tab)) {
+            $tab = [null => null];
             $userACL = new CentreonACL($this->userId);
             $isContactAdmin = $userACL->admin;
             $request = 'SELECT SQL_CALC_FOUND_ROWS id, name FROM nagios_server ns';