diff --git a/openssl/src/dsa.rs b/openssl/src/dsa.rs
index 23ab5743..ca22d334 100644
--- a/openssl/src/dsa.rs
+++ b/openssl/src/dsa.rs
@@ -1,3 +1,6 @@
+//! Digital Signatures
+//!
+//!
 use ffi;
 use foreign_types::ForeignTypeRef;
 use libc::{c_int, c_char, c_void};