diff --git a/clap_builder/src/derive.rs b/clap_builder/src/derive.rs
index 71c0e825193..7494e8461dc 100644
--- a/clap_builder/src/derive.rs
+++ b/clap_builder/src/derive.rs
@@ -1,4 +1,4 @@
-//! This module contains traits that are usable with the `#[derive(...)].`
+//! This module contains traits that are usable with the `#[derive(...)]`
 //! macros in `clap_derive`.
 
 use crate::builder::PossibleValue;