diff --git a/crates/ruma-common/src/serde/base64.rs b/crates/ruma-common/src/serde/base64.rs
index ffa547fd..83bf376a 100644
--- a/crates/ruma-common/src/serde/base64.rs
+++ b/crates/ruma-common/src/serde/base64.rs
@@ -1,4 +1,4 @@
-//!Transparent base64 encoding / decoding as part of (de)serialization.
+//! Transparent base64 encoding / decoding as part of (de)serialization.
 
 use std::{fmt, marker::PhantomData};