diff --git a/redis/Redis.php b/redis/Redis.php
index e7b600dad..5538b795e 100644
--- a/redis/Redis.php
+++ b/redis/Redis.php
@@ -373,9 +373,8 @@ public function setnx( $key, $value ) {}
     /**
      * Remove specified keys.
      *
-     * @param   string|array    $key1 An array of keys, or an undefined number of parameters, each a key: key1 key2 key3 ... keyN
-     * @param   string          $key2 ...
-     * @param   string          $key3 ...
+     * @param   int|string|array    $key1 An array of keys, or an undefined number of parameters, each a key: key1 key2 key3 ... keyN
+     * @param   int|string ...$otherKeys
      * @return  int             Number of keys deleted.
      * @link    https://redis.io/commands/del
      * @example
@@ -388,7 +387,7 @@ public function setnx( $key, $value ) {}
      * $redis->delete(array('key3', 'key4'));   // return 2
      * </pre>
      */
-    public function del( $key1, $key2 = null, $key3 = null ) {}
+    public function del( $key1, ...$otherKeys) {}
 
     /**
      * @see del()
diff --git a/redis/RedisCluster.php b/redis/RedisCluster.php
index 2a0e5b343..07ccb4770 100644
--- a/redis/RedisCluster.php
+++ b/redis/RedisCluster.php
@@ -225,7 +225,7 @@ public function msetnx(array $array) { }
      * $redisCluster->del(array('key3', 'key4'));   // return 2
      * </pre>
      */
-    public function del($key1, $key2 = null, $key3 = null) { }
+    public function del($key1, ...$otherKeys) { }
 
     /**
      * Set the string value in argument as value of the key, with a time to live.