diff --git a/VERSIONS_HOTLINE/84476 b/VERSIONS_HOTLINE/84476
new file mode 100644
index 0000000000000000000000000000000000000000..d03cdfa49bfdcca8f5c952be1b9d720fb6748230
--- /dev/null
+++ b/VERSIONS_HOTLINE/84476
@@ -0,0 +1 @@
+ - ticket #84476 : SIGB Orphee correction authentification avec WS configuré en authentification SIGB uniquement
\ No newline at end of file
diff --git a/library/Class/WebService/SIGB/Orphee/Service.php b/library/Class/WebService/SIGB/Orphee/Service.php
index 59a2fc9ff15add2353f6be50e779e60591ccb4f1..a091eac712b9230b529588cc30af6a13e36bec48 100644
--- a/library/Class/WebService/SIGB/Orphee/Service.php
+++ b/library/Class/WebService/SIGB/Orphee/Service.php
@@ -163,7 +163,7 @@ class Class_WebService_SIGB_Orphee_Service extends Class_WebService_SIGB_Abstrac
 
 
   protected function hasGetAdh() {
-    return $this->_search_client && $this->_search_client->hasFunction('GetAdh');
+    return $this->getSearchClient()->hasFunction('GetAdh');
   }
 
 
diff --git a/tests/library/Class/WebService/SIGB/OrpheeServiceTest.php b/tests/library/Class/WebService/SIGB/OrpheeServiceTest.php
index e9db8d1bb51285f0d2c796bf4422255bae0a72d4..1c7e56e301a6442e53b53295a48ebb1200fd4dc1 100644
--- a/tests/library/Class/WebService/SIGB/OrpheeServiceTest.php
+++ b/tests/library/Class/WebService/SIGB/OrpheeServiceTest.php
@@ -26,11 +26,12 @@ include_once('OrpheeFixtures.php');
 
 class Class_WebService_SIGB_Orphee_ServiceForTesting extends Class_WebService_SIGB_Orphee_Service {
   public function __construct($search_client) {
-    $this->_search_client = $search_client;
+    $this->_provided_search_client = $search_client;
   }
 
 
   public function getSearchClient() {
+    $this->_search_client = $this->_provided_search_client;
     $result = $this->_search_client->GetId(new GetId());
     $this->_guid = $result->GetIdResult;
     $this->_search_client->__setCookie('ASP.NET_SessionId', $this->_guid);