diff --git a/netbox_interfaces.go b/netbox_interfaces.go
index 58c41fc..2093856 100644
--- a/netbox_interfaces.go
+++ b/netbox_interfaces.go
@@ -93,19 +93,19 @@ type InterfaceFilter struct {
 	ConnectionStatus string `schema:"connection_status,omitempty"`
 	Type             string `schema:"type,omitempty"`
 	Mtu              string `schema:"mtu,omitempty"`
-	MgmtOnly         string `schema:"mgmt_only"`
-	Mode             string `schema:"mode"`
-	Description      string `schema:"description"`
-	Q                string `schema:"q"`
-	Device           string `schema:"device"`
-	DeviceId         string `schema:"device_id"`
-	Cabled           string `schema:"cabled"`
-	Kind             string `schema:"kind"`
-	LagId            string `schema:"lag_id"`
-	MacAddress       string `schema:"mac_address"`
-	Tag              string `schema:"tag"`
-	VlanId           string `schema:"vlan_id"`
-	Vlan             string `schema:"vlan"`
+	MgmtOnly         string `schema:"mgmt_only,omitempty"`
+	Mode             string `schema:"mode,omitempty"`
+	Description      string `schema:"description,omitempty"`
+	Q                string `schema:"q,omitempty"`
+	Device           string `schema:"device,omitempty"`
+	DeviceId         string `schema:"device_id,omitempty"`
+	Cabled           string `schema:"cabled,omitempty"`
+	Kind             string `schema:"kind,omitempty"`
+	LagId            string `schema:"lag_id,omitempty"`
+	MacAddress       string `schema:"mac_address,omitempty"`
+	Tag              string `schema:"tag,omitempty"`
+	VlanId           string `schema:"vlan_id,omitempty"`
+	Vlan             string `schema:"vlan,omitempty"`
 }
 
 func (i *Dcim_Interfaces_List) ListInterfaces(n *NetBox, f *InterfaceFilter) error {