diff --git a/inventory/group_vars/ec2 b/inventory/group_vars/ec2
index 450f1b3578..911a8c1ff8 100644
--- a/inventory/group_vars/ec2
+++ b/inventory/group_vars/ec2
@@ -5,4 +5,4 @@ ansible_become_user: root
 ansible_become_method: sudo
 
 # Disable ethX ifcfg, let amazon handle these via DHCP.
-ansible_ifcfg_whitelist: ['eth0', 'eth1', 'eth2', 'eth3']
+ansible_ifcfg_blacklist: true