diff --git a/src/pkg/io/io.go b/src/pkg/io/io.go
index b88c213c81a..3b879189798 100644
--- a/src/pkg/io/io.go
+++ b/src/pkg/io/io.go
@@ -150,20 +150,20 @@ type WriterAt interface {
 	WriteAt(p []byte, off int64) (n int, err os.Error)
 }
 
-// ReadByter is the interface that wraps the ReadByte method.
+// ByteReader is the interface that wraps the ReadByte method.
 //
 // ReadByte reads and returns the next byte from the input.
 // If no byte is available, err will be set.
-type ReadByter interface {
+type ByteReader interface {
 	ReadByte() (c byte, err os.Error)
 }
 
-// ReadRuner is the interface that wraps the ReadRune method.
+// RuneReader is the interface that wraps the ReadRune method.
 //
 // ReadRune reads a single UTF-8 encoded Unicode character
 // and returns the rune and its size in bytes. If no character is
 // available, err will be set.
-type ReadRuner interface {
+type RuneReader interface {
 	ReadRune() (rune int, size int, err os.Error)
 }
 
diff --git a/src/pkg/xml/xml.go b/src/pkg/xml/xml.go
index 4d9c672d273..417b4edfde0 100644
--- a/src/pkg/xml/xml.go
+++ b/src/pkg/xml/xml.go
@@ -163,7 +163,7 @@ type Parser struct {
 	//	"quot": `"`,
 	Entity map[string]string
 
-	r         io.ReadByter
+	r         io.ByteReader
 	buf       bytes.Buffer
 	saved     *bytes.Buffer
 	stk       *stack
@@ -191,7 +191,7 @@ func NewParser(r io.Reader) *Parser {
 	// Assume that if reader has its own
 	// ReadByte, it's efficient enough.
 	// Otherwise, use bufio.
-	if rb, ok := r.(io.ReadByter); ok {
+	if rb, ok := r.(io.ByteReader); ok {
 		p.r = rb
 	} else {
 		p.r = bufio.NewReader(r)