diff --git a/printing/templates/templates.py b/printing/templates/templates.py
index bce7891..9f8e6a7 100644
--- a/printing/templates/templates.py
+++ b/printing/templates/templates.py
@@ -121,10 +121,19 @@ def machine(machine, params):
 
 
 def list_machines(machines, width=None):
-    return tableau([
-            [m['mid'][0], m['rid'][0] , str(m['objectClass'][0])[7:], str(m['host'][0]).split('.')[0],
-               m['ipHostNumber'][0] if m.get('ipHostNumber',[]) else '-', m['macAddress'][0],
-               m.blacklist_actif()[0] if m.blacklist_actif() else '-'] for m in machines],
+    data = [
+        [
+            m['mid'][0],
+            m['rid'][0] if m['rid'] else '-',
+            str(m['objectClass'][0])[7:],
+            str(m['host'][0]).split('.')[0],
+            m['ipHostNumber'][0] if m.get('ipHostNumber',[]) else '-',
+            m['macAddress'][0],
+            m.blacklist_actif()[0] if m.blacklist_actif() else '-',
+        ]
+        for m in machines
+    ]
+    return tableau(data,
                 titre = [u'mid', u'rid', u'Type', u'Nom de machine', u'Adresse IP', u'Adresse MAC', u'Limitation'],
                 largeur = [5, 5, 6, '*', 15, 17, 10],
                 alignement = ['d', 'd', 'c', 'c', 'c', 'c', 'c'],