diff --git a/zebra-network/src/peer/handshake.rs b/zebra-network/src/peer/handshake.rs
index e3a483c25..804ee0ba5 100644
--- a/zebra-network/src/peer/handshake.rs
+++ b/zebra-network/src/peer/handshake.rs
@@ -526,7 +526,7 @@ where
                         }
 
                         // We've reached another heartbeat interval without
-                        // shutting down. so do a heartbeat request.
+                        // shutting down, so do a heartbeat request.
                         //
                         // TODO: await heartbeat and shutdown. The select
                         // function needs pinned types, but pinned generics