diff --git a/src/common/mod.rs b/src/common/mod.rs
index 2342b52dbf1..2d12d990e1a 100644
--- a/src/common/mod.rs
+++ b/src/common/mod.rs
@@ -3,4 +3,5 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 
+/// Module for validation utilities.
 pub mod validation;