diff --git a/firewall_devices.go b/firewall_devices.go
index 4ccc850b5..9b2dda688 100644
--- a/firewall_devices.go
+++ b/firewall_devices.go
@@ -13,9 +13,9 @@ type FirewallDeviceType string
 
 // FirewallDeviceType constants start with FirewallDevice
 const (
-	FirewallDeviceLinode       FirewallDeviceType = "linode"
-	FirewallDeviceNodeBalancer FirewallDeviceType = "nodebalancer"
-	FirewallDeviceInterface    FirewallDeviceType = "interface"
+	FirewallDeviceLinode          FirewallDeviceType = "linode"
+	FirewallDeviceNodeBalancer    FirewallDeviceType = "nodebalancer"
+	FirewallDeviceLinodeInterface FirewallDeviceType = "linode_interface"
 )
 
 // FirewallDevice represents a device governed by a Firewall