diff --git a/src/UnicaenLdap/Service/AbstractService.php b/src/UnicaenLdap/Service/AbstractService.php
index a741996879f908564b91d8f9eb2e1f1b0f230366..a604b5f886bdad313b8e5b75ea4e1be755e75bed 100644
--- a/src/UnicaenLdap/Service/AbstractService.php
+++ b/src/UnicaenLdap/Service/AbstractService.php
@@ -303,8 +303,10 @@ abstract class AbstractService implements
             $filter = $ouFilter . ")$filter)";
         }
         $resource = $this->getLdap()->getResource();
+        ErrorHandler::start(E_WARNING);
         if (null === $attributes) $search = ldap_search($resource, $basedn, $filter);
         else $search = ldap_search($resource, $basedn, $filter, $attributes);
+        ErrorHandler::stop();
         if ($search === false) {
             throw new Exception('searching: ' . $filter);
         }