diff --git a/jwt.go b/jwt.go
index 0165de2..05fe60e 100644
--- a/jwt.go
+++ b/jwt.go
@@ -166,7 +166,7 @@ func (jwt *JWT) clean() {
 			t.Stop()
 			return
 		}
-		now := time.Now().UTC().Unix()
+		now := Now()
 		for k, v := range jwt.blacklist.Map() {
 			if now > v {
 				jwt.blacklist.Remove(k)