diff --git a/go/src/v.io/x/lock/lock.vdl.go b/go/src/v.io/x/lock/lock.vdl.go
index 0649e97..6e3072d 100644
--- a/go/src/v.io/x/lock/lock.vdl.go
+++ b/go/src/v.io/x/lock/lock.vdl.go
@@ -88,17 +88,8 @@
 	return nil
 }
 
-func (x *LockStatus) VDLRead(dec vdl.Decoder) error {
-	var err error
-	if err = dec.StartValue(); err != nil {
-		return err
-	}
-	tmp, err := dec.DecodeInt(32)
-	if err != nil {
-		return err
-	}
-	*x = LockStatus(tmp)
-	return dec.FinishValue()
+func (x LockStatus) VDLIsZero() (bool, error) {
+	return x == 0, nil
 }
 
 func (x LockStatus) VDLWrite(enc vdl.Encoder) error {
@@ -111,6 +102,18 @@
 	return enc.FinishValue()
 }
 
+func (x *LockStatus) VDLRead(dec vdl.Decoder) error {
+	if err := dec.StartValue(); err != nil {
+		return err
+	}
+	tmp, err := dec.DecodeInt(32)
+	if err != nil {
+		return err
+	}
+	*x = LockStatus(tmp)
+	return dec.FinishValue()
+}
+
 //////////////////////////////////////////////////
 // Const definitions