diff --git a/gestion/midtools.py b/gestion/midtools.py
index 728f78e1..e0f429d7 100755
--- a/gestion/midtools.py
+++ b/gestion/midtools.py
@@ -41,8 +41,8 @@ class Mid(object):
     def parse(self, mid):
         self.mid = mid
         self.type = None
-        for tp in config.mid:
-            if mid <= tp[1] and mid >= tp[0]:
+        for tp in config.mid.keys():
+            if mid <= config.mid[tp][1] and mid >= config.mid[tp][0]:
                 self.type = tp
         if self.type is None:
             raise ValueError("mid inconnu : %d" % mid)