diff --git a/erp5/util/testnode/SlapOSMasterCommunicator.py b/erp5/util/testnode/SlapOSMasterCommunicator.py
index bde9ea00bc42d6e4487b4837b409cfd8e96ddbfe..7ade77add33061cee472804c921c9bc3f5482f64 100644
--- a/erp5/util/testnode/SlapOSMasterCommunicator.py
+++ b/erp5/util/testnode/SlapOSMasterCommunicator.py
@@ -119,7 +119,7 @@ class SlapOSMasterCommunicator(object):
 
   @retryOnNetworkFailure
   def isInstanceRequested(self, instance_title):
-    return len(self.hateoas_navigator._getHostingSubscriptionList(
+    return len(self.hateoas_navigator._getInstanceTreeList(
         title=instance_title))
 
   @retryOnNetworkFailure
@@ -132,7 +132,7 @@ class SlapOSMasterCommunicator(object):
 
   @retryOnNetworkFailure
   def getInstanceUrlList(self):
-    return self.hateoas_navigator.getHostingSubscriptionInstanceList(
+    return self.hateoas_navigator.getInstanceTreeInstanceList(
       self.name)
 
   @retryOnNetworkFailure