diff --git a/cros_async/src/audio_streams_async.rs b/cros_async/src/audio_streams_async.rs
index d5a787b1fd..d5a2ce6230 100644
--- a/cros_async/src/audio_streams_async.rs
+++ b/cros_async/src/audio_streams_async.rs
@@ -78,9 +78,9 @@ impl EventAsyncWrapper for EventAsync {
 impl AudioStreamsExecutor for super::Executor {
     #[cfg(unix)]
     fn async_unix_stream(&self, stream: UnixStream) -> Result<AsyncStream> {
-        return Ok(Box::new(IoSourceWrapper {
+        Ok(Box::new(IoSourceWrapper {
             source: self.async_from(AsyncWrapper::new(stream))?,
-        }));
+        }))
     }
 
     /// # Safety
diff --git a/cros_async/src/sys/unix/async_types.rs b/cros_async/src/sys/unix/async_types.rs
index 94aa512d1f..e02fd380a0 100644
--- a/cros_async/src/sys/unix/async_types.rs
+++ b/cros_async/src/sys/unix/async_types.rs
@@ -19,10 +19,11 @@ pub struct AsyncTube {
 
 impl AsyncTube {
     pub fn new(ex: &Executor, tube: Tube) -> io::Result<AsyncTube> {
-        return Ok(AsyncTube {
+        Ok(AsyncTube {
             inner: ex.async_from(tube)?,
-        });
+        })
     }
+
     pub async fn next<T: DeserializeOwned>(&self) -> TubeResult<T> {
         self.inner.wait_readable().await.unwrap();
         self.inner.as_source().recv()
diff --git a/tpm2-sys/build.rs b/tpm2-sys/build.rs
index 0df106998f..997bba7311 100644
--- a/tpm2-sys/build.rs
+++ b/tpm2-sys/build.rs
@@ -26,7 +26,7 @@ fn get_cross_compile_prefix() -> String {
     } else {
         env::var("CARGO_CFG_TARGET_ENV").unwrap()
     };
-    return format!("{}-{}-{}-", arch, os, env);
+    format!("{}-{}-{}-", arch, os, env)
 }
 
 fn build_libtpm2(out_dir: &Path) -> Result<()> {