diff --git a/src/Symfony/Component/Cache/Adapter/RedisAdapter.php b/src/Symfony/Component/Cache/Adapter/RedisAdapter.php
index 46c680afcc..a636124acb 100644
--- a/src/Symfony/Component/Cache/Adapter/RedisAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/RedisAdapter.php
@@ -69,7 +69,7 @@ class RedisAdapter extends AbstractAdapter
         if (0 !== strpos($dsn, 'redis://')) {
             throw new InvalidArgumentException(sprintf('Invalid Redis DSN: %s does not start with "redis://"', $dsn));
         }
-        $params = preg_replace_callback('#^redis://(?:([^@]*)@)?#', function ($m) use (&$auth) {
+        $params = preg_replace_callback('#^redis://(?:(?:[^:@]*+:)?([^@]*+)@)?#', function ($m) use (&$auth) {
             if (isset($m[1])) {
                 $auth = $m[1];
             }