diff --git a/src/biomon/models.py b/src/biomon/models.py
index 7c0bd39..6b941f7 100644
--- a/src/biomon/models.py
+++ b/src/biomon/models.py
@@ -169,7 +169,7 @@ class Room(TimestampedAbstractModel):
 
 
 class Reader(TimestampedAbstractModel):
-    ip_address = models.IPAddressField()
+    ip_address = models.GenericIPAddressField()
     management_port = models.IntegerField()
     room = models.OneToOneField('Room', verbose_name = _(u'Room'),
             null=True, blank=True, on_delete=models.PROTECT)