diff --git a/src/ecies/mod.rs b/src/ecies/mod.rs
index 45d7d560..e8d3703a 100644
--- a/src/ecies/mod.rs
+++ b/src/ecies/mod.rs
@@ -14,6 +14,8 @@
 
 #![deny(missing_docs)]
 
+//! Implementation of an integrated encryption scheme.
+//!
 //! This module implements
 //! [ECIES](https://en.wikipedia.org/wiki/Integrated_Encryption_Scheme), the
 //! elliptic curve variant of the Integrated Encryption Scheme. This is a hybrid