diff --git a/modules/mac_changer.go b/modules/mac_changer.go
index ccbcb65b..92c9b775 100644
--- a/modules/mac_changer.go
+++ b/modules/mac_changer.go
@@ -64,7 +64,7 @@ func (mc *MacChanger) Author() string {
 func (mc *MacChanger) Configure() (err error) {
 	var changeTo string
 
-	if err, mv.iface = mc.StringParam("mac.changer.iface"); err != nil {
+	if err, mc.iface = mc.StringParam("mac.changer.iface"); err != nil {
 		return err
 	}