diff --git a/gestion/annuaires.py b/gestion/annuaires.py
index 57e8ab7a..99b38cdd 100755
--- a/gestion/annuaires.py
+++ b/gestion/annuaires.py
@@ -506,7 +506,7 @@ def all_switchs(bat=None):
         bat = [bat]
     switchs = []
     for b in map(lambda x: x.lower(), bat):
-        dup = map(lambda x: x[1], reverse(b).keys())
+        dup = map(lambda x: x[0], reverse(b).keys())
         # dup contient des elements en double
         for n in list(dict(zip(dup,[None]*len(dup)))):
             if int(n) == 0: