diff --git a/src/Symfony/Component/Cache/Traits/RedisTrait.php b/src/Symfony/Component/Cache/Traits/RedisTrait.php
index 43dbb43639..0276c4fb6d 100644
--- a/src/Symfony/Component/Cache/Traits/RedisTrait.php
+++ b/src/Symfony/Component/Cache/Traits/RedisTrait.php
@@ -156,7 +156,7 @@ trait RedisTrait
 
             $initializer = function ($redis) use ($connect, $params, $dsn, $auth, $hosts) {
                 try {
-                    @$redis->{$connect}($hosts[0]['host'], $hosts[0]['port'], $params['timeout'], (string) $params['persistent_id'], $params['retry_interval']);
+                    @$redis->{$connect}($hosts[0]['host'] ?? $hosts[0]['path'], $hosts[0]['port'] ?? null, $params['timeout'], (string) $params['persistent_id'], $params['retry_interval']);
                 } catch (\RedisException $e) {
                     throw new InvalidArgumentException(sprintf('Redis connection failed (%s): %s', $e->getMessage(), $dsn));
                 }