diff --git a/src/Schedule/Extension/LockingExtension.php b/src/Schedule/Extension/LockingExtension.php
index e5ac638..b3836d1 100644
--- a/src/Schedule/Extension/LockingExtension.php
+++ b/src/Schedule/Extension/LockingExtension.php
@@ -36,7 +36,7 @@ final public function acquireLock(LockFactory $lockFactory, string $mutex): bool
             throw new \LogicException('A lock is already in place.');
         }
 
-        $this->lock = $lockFactory->createLock('symfony-schedule-'.$mutex, $this->ttl);
+        $this->lock = $lockFactory->createLock('symfony-schedule-'.$mutex, $this->ttl, false);
 
         if ($this->lock->acquire()) {
             return true;