diff -r a76bae4795d5 -r 48f5380c26d0 server/src/app/Http/Controllers/Sparql/SparqlClientController.php
--- a/server/src/app/Http/Controllers/Sparql/SparqlClientController.php	Thu Apr 06 11:29:14 2017 +0200
+++ b/server/src/app/Http/Controllers/Sparql/SparqlClientController.php	Fri Jun 09 15:22:02 2017 +0200
@@ -65,7 +65,7 @@
                 ((strlen(parse_url($queryUrl, PHP_URL_QUERY)) > 0)?"&":"?").
                 "timeout=$timeout";
         }
-        return new \EasyRdf\Sparql\Client($queryUrl, config('corpusparole.rdf4j_update_url'));
+        return new \CorpusParole\Libraries\Sparql\GuzzleSparqlClient($this->httpClient, $queryUrl, config('corpusparole.rdf4j_update_url'));
     }
 
     // display form