diff --git a/collector/netclass_linux.go b/collector/netclass_linux.go
index 648cd234..b95bb0bb 100644
--- a/collector/netclass_linux.go
+++ b/collector/netclass_linux.go
@@ -116,13 +116,13 @@ func (c *netClassCollector) netClassSysfsUpdate(ch chan<- prometheus.Metric) err
 		pushMetric(ch, c.getFieldDesc("iface_id"), "iface_id", ifaceInfo.IfIndex, prometheus.GaugeValue, ifaceInfo.Name)
 		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("mtu_bytes"), "mtu_bytes", ifaceInfo.MTU, 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 2402b4cb..7f1f1a4b 100644
--- a/collector/netclass_rtnl_linux.go
+++ b/collector/netclass_rtnl_linux.go
@@ -133,7 +133,7 @@ func (c *netClassCollector) netClassRTNLUpdate(ch chan<- prometheus.Metric) erro
 		} else {
 			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)
 		}