diff --git a/src/cutecoin/core/graph.py b/src/cutecoin/core/graph.py
index fea0c925035831fad5593359741855b017fd1a99..8a7cdbd00f6b5fcdcb7207fa46886e8f0ddef4ee 100644
--- a/src/cutecoin/core/graph.py
+++ b/src/cutecoin/core/graph.py
@@ -50,9 +50,9 @@ class Graph(object):
         logging.debug("path between %s to %s..." % (from_identity.uid, to_identity.uid))
         if from_identity.pubkey not in self._graph.keys():
             self.add_identity(from_identity)
-            certifier_list = from_identity.certifiers_of(self.community)
+            certifier_list = from_identity.certifiers_of(self.app.identities_registry, self.community)
             self.add_certifier_list(certifier_list, from_identity, to_identity)
-            certified_list = from_identity.certified_by(self.community)
+            certified_list = from_identity.certified_by(self.app.identities_registry, self.community)
             self.add_certified_list(certified_list, from_identity, to_identity)
 
         if to_identity.pubkey not in self._graph.keys():
diff --git a/src/cutecoin/gui/community_tab.py b/src/cutecoin/gui/community_tab.py
index 6928f1e8e22af4b2b5fac5426cd33f74b5da24f5..e9e3653fbf713161fe3e28ff84f09fd8d65779e5 100644
--- a/src/cutecoin/gui/community_tab.py
+++ b/src/cutecoin/gui/community_tab.py
@@ -145,7 +145,7 @@ class CommunityTabWidget(QWidget, Ui_CommunityTabWidget):
         self.certify_identity(person)
 
     def identity_informations(self, person):
-        dialog = MemberDialog(none, self.account, self.community, person)
+        dialog = MemberDialog(self.app, self.account, self.community, person)
         dialog.exec_()
 
     def add_identity_as_contact(self, person):