diff --git a/src/handshake/client.rs b/src/handshake/client.rs
index 014af64..a8a7d8a 100644
--- a/src/handshake/client.rs
+++ b/src/handshake/client.rs
@@ -135,7 +135,7 @@ impl<S: Read + Write> HandshakeRole for ClientHandshake<S> {
                     stream,
                     tail,
                     Role::Client,
-                    self.config.clone(),
+                    self.config,
                 );
                 ProcessingResult::Done((websocket, result))
             }
diff --git a/src/handshake/server.rs b/src/handshake/server.rs
index 11a8ffb..aed7edf 100644
--- a/src/handshake/server.rs
+++ b/src/handshake/server.rs
@@ -156,7 +156,7 @@ impl<S: Read + Write, C: Callback> HandshakeRole for ServerHandshake<S, C> {
                 let websocket = WebSocket::from_raw_socket(
                     stream,
                     Role::Server,
-                    self.config.clone(),
+                    self.config,
                 );
                 ProcessingResult::Done(websocket)
             }
diff --git a/src/protocol/frame/coding.rs b/src/protocol/frame/coding.rs
index 5fde5fb..13d9045 100644
--- a/src/protocol/frame/coding.rs
+++ b/src/protocol/frame/coding.rs
@@ -183,8 +183,8 @@ pub enum CloseCode {
 
 impl CloseCode {
     /// Check if this CloseCode is allowed.
-    pub fn is_allowed(&self) -> bool {
-        match *self {
+    pub fn is_allowed(self) -> bool {
+        match self {
             Bad(_)      => false,
             Reserved(_) => false,
             Status      => false,
diff --git a/src/protocol/frame/mask.rs b/src/protocol/frame/mask.rs
index 8b39d76..88b1894 100644
--- a/src/protocol/frame/mask.rs
+++ b/src/protocol/frame/mask.rs
@@ -29,7 +29,7 @@ fn apply_mask_fallback(buf: &mut [u8], mask: [u8; 4]) {
 #[allow(dead_code)]
 fn apply_mask_fast32(buf: &mut [u8], mask: [u8; 4]) {
     let mask_u32: u32 = unsafe {
-        read_unaligned(mask.as_ptr() as *const u32)
+        read_unaligned((&mask).as_ptr() as *const u32)
     };
 
     let mut ptr = buf.as_mut_ptr();
diff --git a/src/protocol/message.rs b/src/protocol/message.rs
index 8ee3eac..f7a4640 100644
--- a/src/protocol/message.rs
+++ b/src/protocol/message.rs
@@ -159,6 +159,7 @@ impl IncompleteMessage {
 }
 
 /// The type of incomplete message.
+#[derive(Copy, Clone)]
 pub enum IncompleteMessageType {
     Text,
     Binary,