diff --git a/identity/src/rsa.rs b/identity/src/rsa.rs
index b14d8c66d86..00c4b65a3bc 100644
--- a/identity/src/rsa.rs
+++ b/identity/src/rsa.rs
@@ -105,7 +105,7 @@ impl PublicKey {
         self.0.clone()
     }
 
-    /// Encode the RSA public key in DER as a X.509 SubjectPublicKeyInfo structure,
+    /// Encode the RSA public key in DER as an X.509 SubjectPublicKeyInfo structure,
     /// as defined in [RFC5280].
     ///
     /// [RFC5280]: https://tools.ietf.org/html/rfc5280#section-4.1
diff --git a/misc/keygen/src/main.rs b/misc/keygen/src/main.rs
index 4c4d3bfbf66..023bc34d81b 100644
--- a/misc/keygen/src/main.rs
+++ b/misc/keygen/src/main.rs
@@ -42,7 +42,7 @@ enum Command {
     },
 }
 
-// Due to the fact that a peer id uses a SHA-256 multihash, it always starts with the
+// Due to the fact that a peer id uses an SHA-256 multihash, it always starts with the
 // bytes 0x1220, meaning that only some characters are valid.
 const ALLOWED_FIRST_BYTE: &[u8] = b"NPQRSTUVWXYZ";
 
diff --git a/misc/multistream-select/src/protocol.rs b/misc/multistream-select/src/protocol.rs
index 93cd4ac02b5..9b015c3c502 100644
--- a/misc/multistream-select/src/protocol.rs
+++ b/misc/multistream-select/src/protocol.rs
@@ -120,7 +120,7 @@ impl fmt::Display for Protocol {
 /// A multistream-select protocol message.
 ///
 /// Multistream-select protocol messages are exchanged with the goal
-/// of agreeing on a application-layer protocol to use on an I/O stream.
+/// of agreeing on an application-layer protocol to use on an I/O stream.
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub(crate) enum Message {
     /// A header message identifies the multistream-select protocol