diff --git a/src/cmd/gofix/Makefile b/src/cmd/gofix/Makefile
index fea50cccc5..85bef2815f 100644
--- a/src/cmd/gofix/Makefile
+++ b/src/cmd/gofix/Makefile
@@ -9,6 +9,7 @@ GOFILES=\
 	error.go\
 	filepath.go\
 	fix.go\
+	htmlerr.go\
 	httpfinalurl.go\
 	httpfs.go\
 	httpheaders.go\
diff --git a/src/cmd/gofix/fix.go b/src/cmd/gofix/fix.go
index 394685a15a..f153da9701 100644
--- a/src/cmd/gofix/fix.go
+++ b/src/cmd/gofix/fix.go
@@ -481,7 +481,7 @@ func newPkgDot(pos token.Pos, pkg, name string) ast.Expr {
 	}
 }
 
-// renameTop renames all references to the top-level name top.
+// renameTop renames all references to the top-level name old.
 // It returns true if it makes any changes.
 func renameTop(f *ast.File, old, new string) bool {
 	var fixed bool
diff --git a/src/cmd/gofix/htmlerr.go b/src/cmd/gofix/htmlerr.go
new file mode 100644
index 0000000000..b5105c8226
--- /dev/null
+++ b/src/cmd/gofix/htmlerr.go
@@ -0,0 +1,47 @@
+// Copyright 2011 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"go/ast"
+)
+
+func init() {
+	register(htmlerrFix)
+}
+
+var htmlerrFix = fix{
+	"htmlerr",
+	"2011-11-04",
+	htmlerr,
+	`Rename html's Tokenizer.Error method to Err.
+
+http://codereview.appspot.com/5327064/
+`,
+}
+
+var htmlerrTypeConfig = &TypeConfig{
+	Func: map[string]string{
+		"html.NewTokenizer": "html.Tokenizer",
+	},
+}
+
+func htmlerr(f *ast.File) bool {
+	if !imports(f, "html") {
+		return false
+	}
+
+	typeof, _ := typecheck(htmlerrTypeConfig, f)
+
+	fixed := false
+	walk(f, func(n interface{}) {
+		s, ok := n.(*ast.SelectorExpr)
+		if ok && typeof[s.X] == "html.Tokenizer" && s.Sel.Name == "Error" {
+			s.Sel.Name = "Err"
+			fixed = true
+		}
+	})
+	return fixed
+}
diff --git a/src/cmd/gofix/htmlerr_test.go b/src/cmd/gofix/htmlerr_test.go
new file mode 100644
index 0000000000..043abc42a2
--- /dev/null
+++ b/src/cmd/gofix/htmlerr_test.go
@@ -0,0 +1,39 @@
+// Copyright 2011 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+func init() {
+	addTestCases(htmlerrTests, htmlerr)
+}
+
+var htmlerrTests = []testCase{
+	{
+		Name: "htmlerr.0",
+		In: `package main
+
+import (
+	"html"
+)
+
+func f() {
+	e := errors.New("")
+	t := html.NewTokenizer(r)
+	_, _ = e.Error(), t.Error()
+}
+`,
+		Out: `package main
+
+import (
+	"html"
+)
+
+func f() {
+	e := errors.New("")
+	t := html.NewTokenizer(r)
+	_, _ = e.Error(), t.Err()
+}
+`,
+	},
+}
diff --git a/src/pkg/compress/bzip2/bit_reader.go b/src/pkg/compress/bzip2/bit_reader.go
index d058c14833..b2c13e50ca 100644
--- a/src/pkg/compress/bzip2/bit_reader.go
+++ b/src/pkg/compress/bzip2/bit_reader.go
@@ -37,7 +37,7 @@ func newBitReader(r io.Reader) bitReader {
 
 // ReadBits64 reads the given number of bits and returns them in the
 // least-significant part of a uint64. In the event of an error, it returns 0
-// and the error can be obtained by calling Error().
+// and the error can be obtained by calling Err().
 func (br *bitReader) ReadBits64(bits uint) (n uint64) {
 	for bits > br.bits {
 		b, err := br.r.ReadByte()
@@ -82,6 +82,6 @@ func (br *bitReader) ReadBit() bool {
 	return n != 0
 }
 
-func (br *bitReader) Error() error {
+func (br *bitReader) Err() error {
 	return br.err
 }
diff --git a/src/pkg/compress/bzip2/bzip2.go b/src/pkg/compress/bzip2/bzip2.go
index 343cca03e3..3dc8c62061 100644
--- a/src/pkg/compress/bzip2/bzip2.go
+++ b/src/pkg/compress/bzip2/bzip2.go
@@ -80,7 +80,7 @@ func (bz2 *reader) Read(buf []byte) (n int, err error) {
 
 	if !bz2.setupDone {
 		err = bz2.setup()
-		brErr := bz2.br.Error()
+		brErr := bz2.br.Err()
 		if brErr != nil {
 			err = brErr
 		}
@@ -91,7 +91,7 @@ func (bz2 *reader) Read(buf []byte) (n int, err error) {
 	}
 
 	n, err = bz2.read(buf)
-	brErr := bz2.br.Error()
+	brErr := bz2.br.Err()
 	if brErr != nil {
 		err = brErr
 	}
diff --git a/src/pkg/exp/sql/sql.go b/src/pkg/exp/sql/sql.go
index 1af8e063cf..291af7f67d 100644
--- a/src/pkg/exp/sql/sql.go
+++ b/src/pkg/exp/sql/sql.go
@@ -620,7 +620,7 @@ func (s *Stmt) Close() error {
 //         err = rows.Scan(&id, &name)
 //         ...
 //     }
-//     err = rows.Error() // get any Error encountered during iteration
+//     err = rows.Err() // get any error encountered during iteration
 //     ...
 type Rows struct {
 	db          *DB
@@ -651,8 +651,8 @@ func (rs *Rows) Next() bool {
 	return rs.lasterr == nil
 }
 
-// Error returns the error, if any, that was encountered during iteration.
-func (rs *Rows) Error() error {
+// Err returns the error, if any, that was encountered during iteration.
+func (rs *Rows) Err() error {
 	if rs.lasterr == io.EOF {
 		return nil
 	}
diff --git a/src/pkg/html/parse.go b/src/pkg/html/parse.go
index 811e265473..fae0975d37 100644
--- a/src/pkg/html/parse.go
+++ b/src/pkg/html/parse.go
@@ -250,7 +250,7 @@ func (p *parser) read() error {
 	p.tok = p.tokenizer.Token()
 	switch p.tok.Type {
 	case ErrorToken:
-		return p.tokenizer.Error()
+		return p.tokenizer.Err()
 	case SelfClosingTagToken:
 		p.hasSelfClosingToken = true
 		p.tok.Type = StartTagToken
diff --git a/src/pkg/html/token.go b/src/pkg/html/token.go
index 9213844728..2c138227b1 100644
--- a/src/pkg/html/token.go
+++ b/src/pkg/html/token.go
@@ -149,9 +149,9 @@ type Tokenizer struct {
 	textIsRaw bool
 }
 
-// Error returns the error associated with the most recent ErrorToken token.
+// Err returns the error associated with the most recent ErrorToken token.
 // This is typically io.EOF, meaning the end of tokenization.
-func (z *Tokenizer) Error() error {
+func (z *Tokenizer) Err() error {
 	if z.tt != ErrorToken {
 		return nil
 	}
diff --git a/src/pkg/html/token_test.go b/src/pkg/html/token_test.go
index 76cc9f835d..61d4e67c06 100644
--- a/src/pkg/html/token_test.go
+++ b/src/pkg/html/token_test.go
@@ -427,7 +427,7 @@ loop:
 		if tt.golden != "" {
 			for i, s := range strings.Split(tt.golden, "$") {
 				if z.Next() == ErrorToken {
-					t.Errorf("%s token %d: want %q got error %v", tt.desc, i, s, z.Error())
+					t.Errorf("%s token %d: want %q got error %v", tt.desc, i, s, z.Err())
 					continue loop
 				}
 				actual := z.Token().String()
@@ -438,8 +438,8 @@ loop:
 			}
 		}
 		z.Next()
-		if z.Error() != io.EOF {
-			t.Errorf("%s: want EOF got %q", tt.desc, z.Error())
+		if z.Err() != io.EOF {
+			t.Errorf("%s: want EOF got %q", tt.desc, z.Err())
 		}
 	}
 }
@@ -543,8 +543,8 @@ loop:
 		tt := z.Next()
 		switch tt {
 		case ErrorToken:
-			if z.Error() != io.EOF {
-				t.Error(z.Error())
+			if z.Err() != io.EOF {
+				t.Error(z.Err())
 			}
 			break loop
 		case TextToken: