diff --git a/machines/forms.py b/machines/forms.py
index c72026fe..cd4ac87d 100644
--- a/machines/forms.py
+++ b/machines/forms.py
@@ -60,12 +60,6 @@ class EditInterfaceForm(ModelForm):
         if "machine" in self.fields:
             self.fields['machine'].queryset = Machine.objects.all().select_related('user')
 
-    def clean(self):
-        data = super(EditInterfaceForm, self).clean()
-        mac = str(self.data['mac_address'])
-        if len(''.join(mac.replace("-",":").split(":"))) != 12:
-            self.add_error('mac_address', "Format de la mac incorrect")
-
 class AddInterfaceForm(EditInterfaceForm):
     class Meta(EditInterfaceForm.Meta):
         fields = ['ipv4','mac_address','type','details']
diff --git a/machines/models.py b/machines/models.py
index 7f86d0c0..8eff89fc 100644
--- a/machines/models.py
+++ b/machines/models.py
@@ -235,10 +235,9 @@ class Interface(models.Model):
         return str(EUI(self.mac_address, dialect=mac_bare)).lower()
 
     def filter_macaddress(self):
-        mac_address = str(EUI(self.mac_address))
-        if mac_address:
-            self.mac_address = mac_address
-        else:
+        try:
+            self.mac_address = str(EUI(self.mac_address))
+        except :
             raise ValidationError("La mac donnée est invalide")
 
     def clean(self, *args, **kwargs):