diff --git a/example_test.go b/example_test.go
index 8e5ae50b..28315e27 100644
--- a/example_test.go
+++ b/example_test.go
@@ -102,7 +102,7 @@ func (rd *APAIR) Unpack(buf []byte) (int, error) {
 	return len(buf), nil
 }
 
-func (rd *APAIR) CopyRdata(dest dns.PrivateRdata) error {
+func (rd *APAIR) Copy(dest dns.PrivateRdata) error {
 	cp := make([]byte, rd.Len())
 	_, err := rd.Pack(cp)
 	if err != nil {
diff --git a/privaterr.go b/privaterr.go
index c3392967..85e70582 100644
--- a/privaterr.go
+++ b/privaterr.go
@@ -25,8 +25,8 @@ type PrivateRdata interface {
 	// Unpack is used when unpacking a private RR from a buffer.
 	// TODO(miek): diff. signature than Pack, see edns0.go for instance.
 	Unpack([]byte) (int, error)
-	// CopyRdata copies the Rdata.
-	CopyRdata(PrivateRdata) error
+	// Copy copies the Rdata.
+	Copy(PrivateRdata) error
 	// Len returns the length in octets of the Rdata.
 	Len() int
 }
@@ -64,7 +64,7 @@ func (r *PrivateRR) copy() RR {
 	newh := r.Hdr.copyHeader()
 	rr.Hdr = *newh
 
-	err := r.Data.CopyRdata(rr.Data)
+	err := r.Data.Copy(rr.Data)
 	if err != nil {
 		panic("dns: got value that could not be used to copy Private rdata")
 	}
diff --git a/privaterr_test.go b/privaterr_test.go
index be236a2a..82521571 100644
--- a/privaterr_test.go
+++ b/privaterr_test.go
@@ -37,7 +37,7 @@ func (rd *ISBN) Unpack(buf []byte) (int, error) {
 	return len(buf), nil
 }
 
-func (rd *ISBN) CopyRdata(dest dns.PrivateRdata) error {
+func (rd *ISBN) Copy(dest dns.PrivateRdata) error {
 	isbn, ok := dest.(*ISBN)
 	if !ok {
 		return dns.ErrRdata
@@ -127,7 +127,7 @@ func (rd *VERSION) Unpack(buf []byte) (int, error) {
 	return len(buf), nil
 }
 
-func (rd *VERSION) CopyRdata(dest dns.PrivateRdata) error {
+func (rd *VERSION) Copy(dest dns.PrivateRdata) error {
 	isbn, ok := dest.(*VERSION)
 	if !ok {
 		return dns.ErrRdata