diff --git a/spec/classes/redis_sentinel_spec.rb b/spec/classes/redis_sentinel_spec.rb
index 21935ecc..acdc0b01 100644
--- a/spec/classes/redis_sentinel_spec.rb
+++ b/spec/classes/redis_sentinel_spec.rb
@@ -136,6 +136,7 @@
 dir /tmp/redis
 daemonize #{facts[:osfamily] == 'RedHat' ? 'no' : 'yes'}
 pidfile #{pidfile}
+protected-mode yes
 
 sentinel monitor cow 127.0.0.1 6379 2
 sentinel down-after-milliseconds cow 6000