diff --git a/runtime/src/accounts_background_service.rs b/runtime/src/accounts_background_service.rs
index 269c3b3c10..f140c61550 100644
--- a/runtime/src/accounts_background_service.rs
+++ b/runtime/src/accounts_background_service.rs
@@ -1,6 +1,6 @@
-// Service to clean up dead slots in accounts_db
-//
-// This can be expensive since we have to walk the append vecs being cleaned up.
+//! Service to clean up dead slots in accounts_db
+//!
+//! This can be expensive since we have to walk the append vecs being cleaned up.
 
 mod stats;
 use {