diff --git a/xsd/onvif/onvif.go b/xsd/onvif/onvif.go
index 95769709..b8ee1dc0 100644
--- a/xsd/onvif/onvif.go
+++ b/xsd/onvif/onvif.go
@@ -551,7 +551,7 @@ type PTZSpeed interface {
 }
 
 type PTZSpeedZoom struct {
-	Zoom Vector1D `xml:"onvif:Zoom,omitempty"`
+	Zoom Vector1D `xml:"onvif:Zoom"`
 }
 
 type PTZSpeedPanTilt struct {
@@ -559,13 +559,13 @@ type PTZSpeedPanTilt struct {
 }
 
 type Vector2D struct {
-	X     float64    `xml:"x,attr,omitempty"`
-	Y     float64    `xml:"y,attr,omitempty"`
+	X     float64    `xml:"x,attr"`
+	Y     float64    `xml:"y,attr"`
 	Space xsd.AnyURI `xml:"space,attr,omitempty"`
 }
 
 type Vector1D struct {
-	X     float64    `xml:"x,attr,omitempty"`
+	X     float64    `xml:"x,attr"`
 	Space xsd.AnyURI `xml:"space,attr,omitempty"`
 }