diff --git a/gestion/tools/locate-mac.py b/gestion/tools/locate-mac.py
index 75e5ca6f..279204de 100755
--- a/gestion/tools/locate-mac.py
+++ b/gestion/tools/locate-mac.py
@@ -6,6 +6,7 @@ sys.path.append('/usr/scripts/gestion')
 from annuaires import reverse, all_switchs
 from hptools import hpswitch
 from time import sleep
+from os import system
 import threading
 
 mac = ":".join([i.zfill(2) for i in sys.argv[1].split(":")]).lower()
@@ -34,3 +35,6 @@ for switch in ['backbone'] + all_switchs():
 
 while len(threading.enumerate()) > 1 :
     sleep(1)
+
+print
+system('whos mac=%s' % mac)