diff --git a/src/libstd/io/stdio.rs b/src/libstd/io/stdio.rs
index 9a4cde7e162..1f73054e3be 100644
--- a/src/libstd/io/stdio.rs
+++ b/src/libstd/io/stdio.rs
@@ -30,27 +30,18 @@ thread_local! {
 ///
 /// This handle is not synchronized or buffered in any fashion. Constructed via
 /// the `std::io::stdio::stdin_raw` function.
-///
-/// The size of a StdinRaw struct may vary depending on the target operating
-/// system.
 struct StdinRaw(stdio::Stdin);
 
 /// A handle to a raw instance of the standard output stream of this process.
 ///
 /// This handle is not synchronized or buffered in any fashion. Constructed via
 /// the `std::io::stdio::stdout_raw` function.
-///
-/// The size of a StdoutRaw struct may vary depending on the target operating
-/// system.
 struct StdoutRaw(stdio::Stdout);
 
 /// A handle to a raw instance of the standard output stream of this process.
 ///
 /// This handle is not synchronized or buffered in any fashion. Constructed via
 /// the `std::io::stdio::stderr_raw` function.
-///
-/// The size of a StderrRaw struct may vary depending on the target operating
-/// system.
 struct StderrRaw(stdio::Stderr);
 
 /// Constructs a new raw handle to the standard input of this process.
diff --git a/src/libstd/net/addr.rs b/src/libstd/net/addr.rs
index f985c1f2bc8..57efc3095fc 100644
--- a/src/libstd/net/addr.rs
+++ b/src/libstd/net/addr.rs
@@ -28,7 +28,7 @@ use slice;
 /// as possibly some version-dependent additional information. See [`SocketAddrV4`]'s and
 /// [`SocketAddrV6`]'s respective documentation for more details.
 ///
-/// The size of a SocketAddr instance may vary depending on the target operating
+/// The size of a `SocketAddr` instance may vary depending on the target operating
 /// system.
 ///
 /// [IP address]: ../../std/net/enum.IpAddr.html