diff --git a/src/onion/circuit.rs b/src/onion/circuit.rs
index c0dca91..7fd5c24 100644
--- a/src/onion/circuit.rs
+++ b/src/onion/circuit.rs
@@ -21,9 +21,9 @@ use tokio::time;
 use tokio::time::Duration;
 
 /// timeout applied if there is no traffic on a circuit
-pub(crate) const TIMEOUT_IDLE: u64 = 120;
+pub(crate) const IDLE_TIMEOUT: Duration = Duration::from_secs(120);
 /// timeout applied for a teardown operation
-const TIMEOUT_TEARDOWN: u64 = 5;
+const TEARDOWN_TIMEOUT: Duration = Duration::from_secs(5);
 
 pub(crate) type CircuitId = u16;
 
@@ -51,7 +51,7 @@ impl Circuit {
     }
 
     pub(crate) async fn teardown_with_timeout(&self, rng: &rand::SystemRandom) {
-        match time::timeout(Duration::from_secs(TIMEOUT_TEARDOWN), {
+        match time::timeout(TEARDOWN_TIMEOUT, {
             // NOTE: Ignore any errors
             self.socket().await.teardown(self.id, rng)
         })
@@ -148,10 +148,7 @@ impl CircuitHandler {
             })
         } else {
             trace!("Incoming handshake failed post-handshake: unable to derive key");
-            let _ = time::timeout(Duration::from_secs(TIMEOUT_TEARDOWN), {
-                socket.teardown(circuit_id, &rng)
-            })
-            .await;
+            let _ = time::timeout(TEARDOWN_TIMEOUT, socket.teardown(circuit_id, &rng)).await;
             Err(anyhow!(
                 "Incoming handshake failed post-handshake: unable to derive key"
             ))
@@ -174,7 +171,7 @@ impl CircuitHandler {
 
     async fn respond_loop(&mut self) -> Result<()> {
         loop {
-            let mut delay = time::delay_for(Duration::from_secs(TIMEOUT_IDLE));
+            let mut delay = time::delay_for(IDLE_TIMEOUT);
 
             match &mut self.state {
                 State::Default => {
diff --git a/src/onion/socket.rs b/src/onion/socket.rs
index ba399d9..f5fbdd6 100644
--- a/src/onion/socket.rs
+++ b/src/onion/socket.rs
@@ -11,10 +11,10 @@ use tokio::net::TcpStream;
 use tokio::prelude::*;
 use tokio::time::{timeout, Duration, Elapsed};
 
-/// timeout apllied during a read on the socket
-const TIMEOUT_READ: u64 = 5;
-/// timeout apllied during a write on the socket
-const TIMEOUT_WRITE: u64 = 2;
+/// timeout applied during a read on the socket
+const READ_TIMEOUT: Duration = Duration::from_secs(5);
+/// timeout applied during a write on the socket
+const WRITE_TIMEOUT: Duration = Duration::from_secs(2);
 
 #[derive(Error, Debug)]
 pub(crate) enum OnionSocketError {
@@ -90,11 +90,7 @@ impl<S> OnionSocket<S> {
 
 impl<S: AsyncRead + Unpin> OnionSocket<S> {
     async fn read_buf_from_stream(&mut self) -> SocketResult<usize> {
-        Ok(timeout(
-            Duration::from_secs(TIMEOUT_READ),
-            self.stream.read_exact(&mut self.buf),
-        )
-        .await??)
+        Ok(timeout(READ_TIMEOUT, self.stream.read_exact(&mut self.buf)).await??)
     }
 
     /// Listends for incoming `CIRCUIT CREATE` messages and returns the circuit id and key in this
@@ -137,11 +133,7 @@ impl<S: AsyncRead + Unpin> OnionSocket<S> {
 
 impl<S: AsyncWrite + Unpin> OnionSocket<S> {
     async fn write_buf_to_stream(&mut self) -> SocketResult<()> {
-        Ok(timeout(
-            Duration::from_secs(TIMEOUT_WRITE),
-            self.stream.write_all(self.buf.as_ref()),
-        )
-        .await??)
+        Ok(timeout(WRITE_TIMEOUT, self.stream.write_all(self.buf.as_ref())).await??)
     }
 
     async fn encrypt_and_send_opaque<K: ToBytes>(
diff --git a/src/onion/tests.rs b/src/onion/tests.rs
index a9b5b82..154af57 100644
--- a/src/onion/tests.rs
+++ b/src/onion/tests.rs
@@ -9,8 +9,7 @@ use tokio::stream;
 
 const TEST_IP: IpAddr = IpAddr::V4(Ipv4Addr::LOCALHOST);
 static PORT_COUNTER: AtomicU16 = AtomicU16::new(42000);
-const TIME_ERROR_TIMEOUT: u64 = 4;
-const ERROR_TIMEOUT: Duration = Duration::from_secs(TIME_ERROR_TIMEOUT);
+const ERROR_TIMEOUT: Duration = Duration::from_secs(4);
 
 pub(crate) fn read_rsa_keypair<P: AsRef<Path>>(path: P) -> Result<(RsaPrivateKey, RsaPublicKey)> {
     let private_key = RsaPrivateKey::from_pem_file(path)?;
@@ -269,9 +268,7 @@ async fn test_timeout() -> Result<()> {
         Err(_) => panic!("Expected ready event, got timeout"),
     }
 
-    let mut delay = time::delay_for(Duration::from_secs(
-        circuit::TIMEOUT_IDLE + TIME_ERROR_TIMEOUT,
-    ));
+    let mut delay = time::delay_for(circuit::IDLE_TIMEOUT + ERROR_TIMEOUT);
     tokio::select! {
         _ = handler_task => Ok(()),
         _ = &mut delay => {