diff --git a/src/Symfony/Component/Cache/Traits/RedisTrait.php b/src/Symfony/Component/Cache/Traits/RedisTrait.php
index 126f568112d3a..35695d5b19b52 100644
--- a/src/Symfony/Component/Cache/Traits/RedisTrait.php
+++ b/src/Symfony/Component/Cache/Traits/RedisTrait.php
@@ -492,7 +492,7 @@ protected function doClear(string $namespace)
 
             $cursor = null;
             do {
-                $keys = $host instanceof \Predis\ClientInterface ? $host->scan($cursor, 'MATCH', $pattern, 'COUNT', 1000) : $host->scan($cursor, $pattern, 1000);
+                $keys = $host instanceof \Predis\ClientInterface ? $host->scan($cursor ?? 0, 'MATCH', $pattern, 'COUNT', 1000) : $host->scan($cursor, $pattern, 1000);
                 if (isset($keys[1]) && \is_array($keys[1])) {
                     $cursor = $keys[0];
                     $keys = $keys[1];