diff --git a/ruma-common/src/directory.rs b/ruma-common/src/directory.rs
index 30cb0779..81757993 100644
--- a/ruma-common/src/directory.rs
+++ b/ruma-common/src/directory.rs
@@ -1,4 +1,4 @@
-//! Common types for room directory endpoints
+//! Common types for room directory endpoints.
 
 use std::fmt;
 
diff --git a/ruma-common/src/power_levels.rs b/ruma-common/src/power_levels.rs
index ecc8fa64..373a5b05 100644
--- a/ruma-common/src/power_levels.rs
+++ b/ruma-common/src/power_levels.rs
@@ -1,4 +1,4 @@
-//! Common types for the [`m.room.power_levels` event][power_levels]
+//! Common types for the [`m.room.power_levels` event][power_levels].
 //!
 //! [power_levels]: https://matrix.org/docs/spec/client_server/r0.6.1#m-room-power-levels
 
diff --git a/ruma-common/src/presence.rs b/ruma-common/src/presence.rs
index 94a138e0..ccf2212c 100644
--- a/ruma-common/src/presence.rs
+++ b/ruma-common/src/presence.rs
@@ -1,4 +1,4 @@
-//! Common types for the [presence module][presence]
+//! Common types for the [presence module][presence].
 //!
 //! [presence]: https://matrix.org/docs/spec/client_server/r0.6.1#id62
 
diff --git a/ruma-common/src/push.rs b/ruma-common/src/push.rs
index cb52db76..41f58477 100644
--- a/ruma-common/src/push.rs
+++ b/ruma-common/src/push.rs
@@ -1,4 +1,4 @@
-//! Common types for the [push notifications module][push]
+//! Common types for the [push notifications module][push].
 //!
 //! [push]: https://matrix.org/docs/spec/client_server/r0.6.1#id89
 //!
diff --git a/ruma-common/src/thirdparty.rs b/ruma-common/src/thirdparty.rs
index 2db8199e..1453cd86 100644
--- a/ruma-common/src/thirdparty.rs
+++ b/ruma-common/src/thirdparty.rs
@@ -1,4 +1,4 @@
-//! Common types for the [third party networks module][thirdparty]
+//! Common types for the [third party networks module][thirdparty].
 //!
 //! [thirdparty]: https://matrix.org/docs/spec/client_server/r0.6.1#id153
 
diff --git a/ruma-identifiers/src/device_key_id.rs b/ruma-identifiers/src/device_key_id.rs
index a5f29e26..28c406f3 100644
--- a/ruma-identifiers/src/device_key_id.rs
+++ b/ruma-identifiers/src/device_key_id.rs
@@ -4,7 +4,7 @@ use std::{convert::TryInto, fmt, num::NonZeroU8};
 
 use crate::{crypto_algorithms::DeviceKeyAlgorithm, DeviceId, Error};
 
-/// A key algorithm and a device id, combined with a ':'
+/// A key algorithm and a device id, combined with a ':'.
 #[derive(Clone)]
 pub struct DeviceKeyId {
     full_id: Box<str>,