diff --git a/gestion/hptools.py b/gestion/hptools.py
index 68e08cfc..ec416e91 100644
--- a/gestion/hptools.py
+++ b/gestion/hptools.py
@@ -224,7 +224,15 @@ class hpswitch :
         if self.__debug : self.__logDest.write("HP DEBUG : show_prise_mac(prise=%s)\n" % prise)
         try:
             data = self.walk('STATISTICS-MIB::hpSwitchPortFdbAddress.%d' % int(prise))
-            return map(lambda x:findall('".*"',":".join(x.lower().split(' ')))[0][1:-2],data.values())
+            macs = []
+            for value in data.itervalues():
+                mac = findall('".*"', value)[0][1:-1]
+                if ' ' in mac:
+                    macs.append(":".join(mac.lower().split(" ")))
+                else:
+                    macs.append(":".join("%02x" % ord(digit) for digit in mac))
+            print macs
+            return macs
         except ValueError:
             # Pas de MAC trouvée
             return []
@@ -243,7 +251,10 @@ class hpswitch :
 
         # On cherche dans data la bonne adresse MAC
         for (onesnmp, onemac) in data.iteritems():
-            if onemac[1:-2] == mac:
+            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])
 
         # On a rien trouvé