diff --git a/gestion/hptools.py b/gestion/hptools.py
index b050a5a2..0e92b375 100644
--- a/gestion/hptools.py
+++ b/gestion/hptools.py
@@ -256,11 +256,14 @@ class hpswitch :
 
         # On cherche dans data la bonne adresse MAC
         for (onesnmp, onemac) in data.iteritems():
-            onemac = findall('".*"', onemac)[0][1:-1]
-            if ' ' not in onemac:
-                onemac = " ".join("%02x" % ord(digit) for digit in mac)
-            if onemac.startswith(mac):
-                return int(onesnmp.split(".")[1])
+            try:
+                onemac = findall('".*"', onemac)[0][1:-1]
+                if ' ' not in onemac:
+                    onemac = " ".join("%02x" % ord(digit) for digit in mac)
+                if onemac.startswith(mac):
+                    return int(onesnmp.split(".")[1])
+            except:
+                pass
 
         # On a rien trouvé
         return None