diff --git a/sentinel.go b/sentinel.go
index 819ec192..e4c9d834 100644
--- a/sentinel.go
+++ b/sentinel.go
@@ -245,6 +245,7 @@ func (opt *FailoverOptions) clusterOptions() *ClusterOptions {
 
 		MaxRedirects: opt.MaxRetries,
 
+		ReadOnly:       opt.ReplicaOnly,
 		RouteByLatency: opt.RouteByLatency,
 		RouteRandomly:  opt.RouteRandomly,