diff --git a/src/include/replication/walsender_private.h b/src/include/replication/walsender_private.h
index c14888e493..9c61f92c44 100644
--- a/src/include/replication/walsender_private.h
+++ b/src/include/replication/walsender_private.h
@@ -65,7 +65,7 @@ typedef struct WalSnd
 	 */
 	int			sync_standby_priority;
 
-	/* Protects shared variables shown above. */
+	/* Protects shared variables in this structure. */
 	slock_t		mutex;
 
 	/*