diff --git a/.travis.yml b/.travis.yml
index 89d0689a..f07fc39f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,6 @@ install:
   - go install ./cmd/shadowsocks-server
   - popd
 script:
-  - pushd $GOPATH/src/github.com/shadowsocks/shadowsocks-go
-  - PATH=$PATH:$GOPATH/bin/ bash -x ./script/test.sh
+  - pushd $TRAVIS_BUILD_DIR
+  - PATH=$PATH:$HOME/gopath/bin bash -x ./script/test.sh
   - popd
diff --git a/README.md b/README.md
index caa80583..ee24116c 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,8 @@ The protocol is compatible with the origin shadowsocks (if both have been upgrad
 
 **Note `server_password` option syntax changed in 0.6.2, the client now connects to servers in the order specified in the config.**
 
+**Please develop on the latest develop branch if you want to send pull request.**
+
 # Install
 
 Compiled client binaries can be download [here](http://dl.chenyufei.info/shadowsocks/). (All compiled with cgo disabled, except the mac version.)
diff --git a/shadowsocks/config.go b/shadowsocks/config.go
index 273c0f42..f96ff504 100644
--- a/shadowsocks/config.go
+++ b/shadowsocks/config.go
@@ -108,6 +108,10 @@ func UpdateConfig(old, new *Config) {
 		// log.Printf("%d: %s %s = %v\n", i,
 		// typeOfT.Field(i).Name, newField.Type(), newField.Interface())
 		switch newField.Kind() {
+		case reflect.Interface:
+			if fmt.Sprintf("%v", newField.Interface()) != "" {
+				oldField.Set(newField)
+			}
 		case reflect.String:
 			s := newField.String()
 			if s != "" {
diff --git a/shadowsocks/encrypt.go b/shadowsocks/encrypt.go
index 16261074..4294e38a 100644
--- a/shadowsocks/encrypt.go
+++ b/shadowsocks/encrypt.go
@@ -89,12 +89,6 @@ func newRC4Cipher(key []byte) (enc, dec cipher.Stream, err error) {
 	return rc4Enc, &rc4Dec, nil
 }
 
-type cipherInfo struct {
-	keyLen   int
-	ivLen    int
-	newBlock func([]byte) (cipher.Block, error)
-}
-
 // Ciphers from go.crypto has NewCipher returning specific type of cipher
 // instead of cipher.Block, so we need to have the following adapter
 // functions.
@@ -109,7 +103,13 @@ func newCast5Cipher(key []byte) (cipher.Block, error) {
 	return cast5.NewCipher(key)
 }
 
-var cipherMethod = map[string]cipherInfo{
+type cipherInfo struct {
+	keyLen   int
+	ivLen    int
+	newBlock func([]byte) (cipher.Block, error)
+}
+
+var cipherMethod = map[string]*cipherInfo{
 	"aes-128-cfb": {16, 16, aes.NewCipher},
 	"aes-192-cfb": {24, 16, aes.NewCipher},
 	"aes-256-cfb": {32, 16, aes.NewCipher},
@@ -149,7 +149,7 @@ func NewCipher(method, password string) (c *Cipher, err error) {
 
 	key := evpBytesToKey(password, mi.keyLen)
 
-	c = &Cipher{key: key, info: &mi}
+	c = &Cipher{key: key, info: mi}
 
 	if mi.newBlock == nil {
 		if method == "" {