diff --git a/PcfAnnuaire.py b/PcfAnnuaire.py
index 9802b38..297adaf 100644
--- a/PcfAnnuaire.py
+++ b/PcfAnnuaire.py
@@ -131,7 +131,7 @@ class PcfAnnuaire(BaseContent):
             return sec_gen
         try:
             return [x for x in self.getEntries() if x.service == service and x.manager == sec_gen.dn][0]
-        except KeyError:
+        except IndexError:
             return None
 
     def getServiceNonManagers(self, service):