diff --git a/src/util/header.rs b/src/util/header.rs
index aaf8059978..2ce2af9d93 100644
--- a/src/util/header.rs
+++ b/src/util/header.rs
@@ -34,7 +34,7 @@ impl HeaderCollection {
 		match self.map.insert(lowercase.to_string(), value.to_string()) {
 			Some(old_value) => {
 				//Append if there's already a value
-				self.map.insert(lowercase.to_string(), old_value + ", ".to_string() + value.to_string());
+				self.map.insert(lowercase.to_string(), old_value.to_string() + ", " + value.to_string().as_slice());
 			}
 			None => { }
 		}
diff --git a/src/ws/handshake/request.rs b/src/ws/handshake/request.rs
index d353ab2674..72e71ec968 100644
--- a/src/ws/handshake/request.rs
+++ b/src/ws/handshake/request.rs
@@ -51,13 +51,13 @@ impl WebSocketRequest {
 			_ => { return Err(ParseError::InvalidScheme); }
 		}
 		
-		let host = match ws_uri.serialize_host() {
-			Some(host) => { host }
+		let host : String = match ws_uri.serialize_host() {
+			Some(host) => { host.to_string() }
 			None => { return Err(ParseError::InvalidCharacter); }
 		} + match ws_uri.port_or_default() {
-			Some(port) => { ":".to_string() + port.to_string() }
+			Some(port) => { ":".to_string() + port.to_string().as_slice() }
 			None => { return Err(ParseError::InvalidCharacter); }
-		};
+		}.as_slice();
 
 		let resource_name = match ws_uri.serialize_path() {
 			Some(resource_name) => {
@@ -223,7 +223,7 @@ pub trait WriteWebSocketRequest {
 
 impl<W: Writer> WriteWebSocketRequest for W {
 	fn write_websocket_request(&mut self, request: &WebSocketRequest) -> IoResult<()> {
-		let request_line = "GET ".to_string() + request.resource_name + " HTTP/".to_string() + request.http_version.to_string();
+		let request_line = "GET ".to_string() + request.resource_name.as_slice() + " HTTP/" + request.http_version.to_string().as_slice();
 		
 		try!(self.write_str(request_line.as_slice()));
 		try!(self.write_str("\r\n"));
diff --git a/src/ws/handshake/response.rs b/src/ws/handshake/response.rs
index b2a1f5799a..484ba76d38 100644
--- a/src/ws/handshake/response.rs
+++ b/src/ws/handshake/response.rs
@@ -139,7 +139,7 @@ impl WebSocketResponse {
 	/// Generates the handshake Sec-WebSocket-Accept value from
 	/// the given Sec-WebSocket-Key.
 	pub fn gen_accept<A: ToString>(key: A) -> String {
-		let concat_key = key.to_string() + MAGIC_GUID.to_string();
+		let concat_key = key.to_string() + MAGIC_GUID;
 		let mut sha1 = Sha1::new();
 		sha1.update(concat_key.into_bytes().as_slice());
 		sha1.digest().as_slice().to_base64(STANDARD)
@@ -218,7 +218,9 @@ pub trait WriteWebSocketResponse {
 
 impl<W: Writer> WriteWebSocketResponse for W {
 	fn write_websocket_response(&mut self, response: &WebSocketResponse) -> IoResult<()> {
-		let status_line = "HTTP/".to_string() + response.http_version.to_string() + " ".to_string() + response.status_code.to_string() + " ".to_string() + response.reason_phrase;
+		let mut status_line = "HTTP/".to_string() + response.http_version.to_string().as_slice();
+		status_line = status_line + " " + response.status_code.to_string().as_slice();
+		status_line = status_line + " " + response.reason_phrase.to_string().as_slice();
 		
 		try!(self.write_str(status_line.as_slice()));
 		try!(self.write_str("\r\n"));