diff --git a/redis.conf b/redis.conf
index bd7fa5271..2839ec631 100644
--- a/redis.conf
+++ b/redis.conf
@@ -518,8 +518,9 @@ dir ./
 #    still reply to client requests, possibly with out of date data, or the
 #    data set may just be empty if this is the first synchronization.
 #
-# 2) If replica-serve-stale-data is set to 'no' the replica will reply with
-#    an error "SYNC with master in progress" to all commands except:
+# 2) If replica-serve-stale-data is set to 'no' the replica will reply with error
+#    "MASTERDOWN Link with MASTER is down and replica-serve-stale-data is set to 'no'"
+#    to all data access commands, excusing commands such as :
 #    INFO, REPLICAOF, AUTH, PING, SHUTDOWN, REPLCONF, ROLE, CONFIG, SUBSCRIBE,
 #    UNSUBSCRIBE, PSUBSCRIBE, PUNSUBSCRIBE, PUBLISH, PUBSUB, COMMAND, POST,
 #    HOST and LATENCY.