diff --git a/core/stores/kv/store.go b/core/stores/kv/store.go
index c43dcb9f5664..882dd1e05ede 100644
--- a/core/stores/kv/store.go
+++ b/core/stores/kv/store.go
@@ -38,8 +38,8 @@ type (
 		Hvals(key string) ([]string, error)
 		Incr(key string) (int64, error)
 		Incrby(key string, increment int64) (int64, error)
-		Llen(key string) (int, error)
 		Lindex(key string, index int64) (string, error)
+		Llen(key string) (int, error)
 		Lpop(key string) (string, error)
 		Lpush(key string, values ...interface{}) (int, error)
 		Lrange(key string, start, stop int) ([]string, error)
diff --git a/core/stores/redis/redislock.go b/core/stores/redis/redislock.go
index 7440d6ddfef8..5ed5f24e61f4 100644
--- a/core/stores/redis/redislock.go
+++ b/core/stores/redis/redislock.go
@@ -88,7 +88,7 @@ func (rl *RedisLock) Release() (bool, error) {
 	return reply == 1, nil
 }
 
-// SetExpire sets the expire.
+// SetExpire sets the expiration.
 func (rl *RedisLock) SetExpire(seconds int) {
 	atomic.StoreUint32(&rl.seconds, uint32(seconds))
 }