diff --git a/language/go1_1.go b/language/go1_1.go
deleted file mode 100644
index c743558..0000000
--- a/language/go1_1.go
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright 2013 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.
-
-//go:build !go1.2
-// +build !go1.2
-
-package language
-
-import "sort"
-
-func sortStable(s sort.Interface) {
-	ss := stableSort{
-		s:   s,
-		pos: make([]int, s.Len()),
-	}
-	for i := range ss.pos {
-		ss.pos[i] = i
-	}
-	sort.Sort(&ss)
-}
-
-type stableSort struct {
-	s   sort.Interface
-	pos []int
-}
-
-func (s *stableSort) Len() int {
-	return len(s.pos)
-}
-
-func (s *stableSort) Less(i, j int) bool {
-	return s.s.Less(i, j) || !s.s.Less(j, i) && s.pos[i] < s.pos[j]
-}
-
-func (s *stableSort) Swap(i, j int) {
-	s.s.Swap(i, j)
-	s.pos[i], s.pos[j] = s.pos[j], s.pos[i]
-}
diff --git a/language/go1_2.go b/language/go1_2.go
deleted file mode 100644
index 77aaaa2..0000000
--- a/language/go1_2.go
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright 2013 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.
-
-//go:build go1.2
-// +build go1.2
-
-package language
-
-import "sort"
-
-var sortStable = sort.Stable
diff --git a/language/parse.go b/language/parse.go
index b982d9e..4d57222 100644
--- a/language/parse.go
+++ b/language/parse.go
@@ -6,6 +6,7 @@
 
 import (
 	"errors"
+	"sort"
 	"strconv"
 	"strings"
 
@@ -206,7 +207,7 @@
 		tag = append(tag, t)
 		q = append(q, float32(w))
 	}
-	sortStable(&tagSort{tag, q})
+	sort.Stable(&tagSort{tag, q})
 	return tag, q, nil
 }