diff --git a/kvrocks.conf b/kvrocks.conf
index 9d7971edacd..64f59e201f8 100644
--- a/kvrocks.conf
+++ b/kvrocks.conf
@@ -835,6 +835,7 @@ rocksdb.write_options.sync no
 
 # If yes, writes will not first go to the write ahead log,
 # and the write may get lost after a crash.
+# You must keep wal enabled if you use replication.
 #
 # Default: no
 rocksdb.write_options.disable_wal no