diff --git a/collector/netclass_linux.go b/collector/netclass_linux.go
index 87763c3b6e..b95bb0bb49 100644
--- a/collector/netclass_linux.go
+++ b/collector/netclass_linux.go
@@ -117,9 +117,12 @@ func (c *netClassCollector) netClassSysfsUpdate(ch chan<- prometheus.Metric) err
 		pushMetric(ch, c.getFieldDesc("iface_link"), "iface_link", ifaceInfo.IfLink, prometheus.GaugeValue, ifaceInfo.Name)
 		pushMetric(ch, c.getFieldDesc("iface_link_mode"), "iface_link_mode", ifaceInfo.LinkMode, prometheus.GaugeValue, ifaceInfo.Name)
 		pushMetric(ch, c.getFieldDesc("mtu_bytes"), "mtu_bytes", ifaceInfo.MTU, prometheus.GaugeValue, ifaceInfo.Name)
-		pushMetric(ch, c.getFieldDesc("name_assign_type"), "name_assign_type", ifaceInfo.NameAssignType, prometheus.GaugeValue, ifaceInfo.Name)
 		pushMetric(ch, c.getFieldDesc("net_dev_group"), "net_dev_group", ifaceInfo.NetDevGroup, prometheus.GaugeValue, ifaceInfo.Name)
 
+		if ifaceInfo.NameAssignType != nil {
+			pushMetric(ch, c.getFieldDesc("name_assign_type"), "name_assign_type", ifaceInfo.NameAssignType, prometheus.GaugeValue, ifaceInfo.Name)
+		}
+
 		if ifaceInfo.Speed != nil {
 			// Some devices return -1 if the speed is unknown.
 			if *ifaceInfo.Speed >= 0 || !*netclassInvalidSpeed {
diff --git a/collector/netclass_rtnl_linux.go b/collector/netclass_rtnl_linux.go
index 44d89f8f05..7f1f1a4b21 100644
--- a/collector/netclass_rtnl_linux.go
+++ b/collector/netclass_rtnl_linux.go
@@ -134,8 +134,11 @@ func (c *netClassCollector) netClassRTNLUpdate(ch chan<- prometheus.Metric) erro
 			pushMetric(ch, c.getFieldDesc("iface_link"), "iface_link", msg.Index, prometheus.GaugeValue, msg.Attributes.Name)
 		}
 
+		if ifaceInfo.NameAssignType != nil {
+			pushMetric(ch, c.getFieldDesc("name_assign_type"), "name_assign_type", ifaceInfo.NameAssignType, prometheus.GaugeValue, msg.Attributes.Name)
+		}
+
 		pushMetric(ch, c.getFieldDesc("mtu_bytes"), "mtu_bytes", msg.Attributes.MTU, prometheus.GaugeValue, msg.Attributes.Name)
-		pushMetric(ch, c.getFieldDesc("name_assign_type"), "name_assign_type", ifaceInfo.NameAssignType, prometheus.GaugeValue, msg.Attributes.Name)
 		pushMetric(ch, c.getFieldDesc("net_dev_group"), "net_dev_group", msg.Attributes.NetDevGroup, prometheus.GaugeValue, msg.Attributes.Name)
 		pushMetric(ch, c.getFieldDesc("transmit_queue_length"), "transmit_queue_length", msg.Attributes.TxQueueLen, prometheus.GaugeValue, msg.Attributes.Name)
 		pushMetric(ch, c.getFieldDesc("protocol_type"), "protocol_type", msg.Type, prometheus.GaugeValue, msg.Attributes.Name)