diff --git a/cmd/discoverigd/discoverigd.go b/cmd/discoverigd/discoverigd.go
index 002c338..392aa80 100644
--- a/cmd/discoverigd/discoverigd.go
+++ b/cmd/discoverigd/discoverigd.go
@@ -24,7 +24,7 @@ func displayDevice(indent indentLevel, device *goupnp.Device) {
 		if srv.ServiceType == goupnp.ServiceTypeWANPPPConnection {
 			results, err := goupnp.PerformSoapAction(goupnp.ServiceTypeWANPPPConnection, "GetExternalIPAddress", &srv.ControlURL.URL, nil)
 			if err != nil {
-				fmt.Println(err)
+				fmt.Println("Error calling GetExternalIPAddress:", err)
 			} else {
 				fmt.Println(results)
 			}
diff --git a/device.go b/device.go
index 2045879..13a4951 100644
--- a/device.go
+++ b/device.go
@@ -59,14 +59,14 @@ func (device *Device) SetURLBase(urlBase *url.URL) {
 	device.ManufacturerURL.SetURLBase(urlBase)
 	device.ModelURL.SetURLBase(urlBase)
 	device.PresentationURL.SetURLBase(urlBase)
-	for _, icon := range device.Icons {
-		icon.SetURLBase(urlBase)
+	for i := range device.Icons {
+		device.Icons[i].SetURLBase(urlBase)
 	}
-	for _, srv := range device.Services {
-		srv.SetURLBase(urlBase)
+	for i := range device.Services {
+		device.Services[i].SetURLBase(urlBase)
 	}
-	for _, child := range device.Devices {
-		child.SetURLBase(urlBase)
+	for i := range device.Devices {
+		device.Devices[i].SetURLBase(urlBase)
 	}
 }