diff --git a/lib/db/leveldb_convert.go b/lib/db/leveldb_convert.go
deleted file mode 100644
index 87a4623a7..000000000
--- a/lib/db/leveldb_convert.go
+++ /dev/null
@@ -1,81 +0,0 @@
-// Copyright (C) 2015 The Syncthing Authors.
-//
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License, v. 2.0. If a copy of the MPL was not distributed with this file,
-// You can obtain one at http://mozilla.org/MPL/2.0/.
-
-package db
-
-import (
-	"bytes"
-
-	"github.com/syndtr/goleveldb/leveldb"
-)
-
-// ConvertKeyFormat converts from the v0.11 to the v0.12 database format, to
-// avoid having to do rescan. The change is in the key format for folder
-// labels, so we basically just iterate over the database rewriting keys as
-// necessary and then write out the folder ID mapping at the end.
-func ConvertKeyFormat(from, to *leveldb.DB) error {
-	l.Infoln("Converting database key format")
-	files, globals, unchanged := 0, 0, 0
-
-	dbi := newDBInstance(to)
-	i := from.NewIterator(nil, nil)
-	for i.Next() {
-		key := i.Key()
-		switch key[0] {
-		case KeyTypeDevice:
-			newKey := dbi.deviceKey(oldDeviceKeyFolder(key), oldDeviceKeyDevice(key), oldDeviceKeyName(key))
-			if err := to.Put(newKey, i.Value(), nil); err != nil {
-				return err
-			}
-			files++
-		case KeyTypeGlobal:
-			newKey := dbi.globalKey(oldGlobalKeyFolder(key), oldGlobalKeyName(key))
-			if err := to.Put(newKey, i.Value(), nil); err != nil {
-				return err
-			}
-			globals++
-		default:
-			if err := to.Put(key, i.Value(), nil); err != nil {
-				return err
-			}
-			unchanged++
-		}
-	}
-
-	l.Infof("Converted %d files, %d globals (%d unchanged).", files, globals, unchanged)
-
-	return nil
-}
-
-func oldDeviceKeyFolder(key []byte) []byte {
-	folder := key[1 : 1+64]
-	izero := bytes.IndexByte(folder, 0)
-	if izero < 0 {
-		return folder
-	}
-	return folder[:izero]
-}
-
-func oldDeviceKeyDevice(key []byte) []byte {
-	return key[1+64 : 1+64+32]
-}
-
-func oldDeviceKeyName(key []byte) []byte {
-	return key[1+64+32:]
-}
-
-func oldGlobalKeyName(key []byte) []byte {
-	return key[1+64:]
-}
-
-func oldGlobalKeyFolder(key []byte) []byte {
-	folder := key[1 : 1+64]
-	izero := bytes.IndexByte(folder, 0)
-	if izero < 0 {
-		return folder
-	}
-	return folder[:izero]
-}