diff --git a/Cargo.toml b/Cargo.toml
index f0b9663..ffb6da1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pbbot-rq"
-version = "0.1.6"
+version = "0.1.7"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
diff --git a/src/error.rs b/src/error.rs
index 92b0057..9183e1a 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -17,6 +17,8 @@ pub enum RCError {
     Timeout,
     #[error("client_not_found error")]
     ClientNotFound,
+    #[error("protocol_not_supported error")]
+    ProtocolNotSupported,
     #[error("io error, {0}")]
     IO(#[from] io::Error),
     #[error("websocket error, {0}")]
@@ -39,6 +41,7 @@ impl IntoResponse for RCError {
     fn into_response(self) -> Response {
         let code = match self {
             Self::ClientNotFound => StatusCode::BAD_REQUEST,
+            Self::ProtocolNotSupported => StatusCode::BAD_REQUEST,
             _ => StatusCode::INTERNAL_SERVER_ERROR,
         };
         (code, self.to_string()).into_response()
diff --git a/src/handler/qrcode.rs b/src/handler/qrcode.rs
index 50ecf65..cdb80a9 100644
--- a/src/handler/qrcode.rs
+++ b/src/handler/qrcode.rs
@@ -72,7 +72,11 @@ pub struct CreateClientResp {
 pub async fn create(Json(req): Json<CreateClientReq>) -> RCResult<Json<CreateClientResp>> {
     let rand_seed = req.device_seed.unwrap_or_else(rand::random);
     let device = Device::random_with_rng(&mut StdRng::seed_from_u64(rand_seed));
-    let protocol = Protocol::from_u8(req.protocol);
+    let protocol = match Protocol::from_u8(req.protocol) {
+        Protocol::MacOS => Protocol::MacOS,
+        Protocol::AndroidWatch => Protocol::AndroidWatch,
+        _ => return Err(RCError::ProtocolNotSupported),
+    };
     let (sender, receiver) = tokio::sync::broadcast::channel(10);
     let cli = Arc::new(Client::new(device, get_version(protocol), sender));
     let stream = tokio::net::TcpStream::connect(cli.get_address())