diff --git a/src/Symfony/Component/Cache/Traits/RedisTrait.php b/src/Symfony/Component/Cache/Traits/RedisTrait.php
index af6390b9bcfa5..33f37d828ea81 100644
--- a/src/Symfony/Component/Cache/Traits/RedisTrait.php
+++ b/src/Symfony/Component/Cache/Traits/RedisTrait.php
@@ -499,7 +499,7 @@ protected function doClear(string $namespace)
                     }
                     $this->doDelete($keys);
                 }
-            } while ($cursor = (int) $cursor);
+            } while ($cursor);
         }
 
         return $cleared;