diff --git a/templates/redis.conf.j2 b/templates/redis.conf.j2
index 075f2b99..91392498 100644
--- a/templates/redis.conf.j2
+++ b/templates/redis.conf.j2
@@ -36,7 +36,7 @@ dbfilename {{ redis_db_filename|string }}
 slaveof {{ redis_slaveof }}
 {% endif -%}
 slave-serve-stale-data yes
-slave-read-only {{ redis_slave_read_only }}
+slave-read-only {{ 'yes' if redis_slave_read_only else 'no' }}
 repl-disable-tcp-nodelay no
 {% if redis_repl_backlog_size -%}
 repl-backlog-size {{ redis_repl_backlog_size }}