diff --git a/internal/rdb/rdb_test.go b/internal/rdb/rdb_test.go
index 4feeb22..9d85220 100644
--- a/internal/rdb/rdb_test.go
+++ b/internal/rdb/rdb_test.go
@@ -32,7 +32,7 @@ var (
 
 func init() {
 	flag.StringVar(&redisAddr, "redis_addr", "localhost:6379", "redis address to use in testing")
-	flag.IntVar(&redisDB, "redis_db", 14, "redis db number to use in testing")
+	flag.IntVar(&redisDB, "redis_db", 15, "redis db number to use in testing")
 	flag.BoolVar(&useRedisCluster, "redis_cluster", false, "use redis cluster as a broker in testing")
 	flag.StringVar(&redisClusterAddrs, "redis_cluster_addrs", "localhost:7000,localhost:7001,localhost:7002", "comma separated list of redis server addresses")
 }