diff --git a/core/modules/migrate/src/MemoryManager.php b/core/modules/migrate/src/MemoryManager.php
index b570dd4679..b854613562 100644
--- a/core/modules/migrate/src/MemoryManager.php
+++ b/core/modules/migrate/src/MemoryManager.php
@@ -66,7 +66,7 @@ public function __construct(EventDispatcherInterface $dispatcher, $reclaim_thres
     // @todo: Remove cast to int. See https://www.drupal.org/node/3142934.
     $this->memoryLimit = ($memory_limit == -1)
       ? PHP_INT_MAX
-      : (int) Bytes::toInt($memory_limit);
+      : Bytes::toInt($memory_limit);
   }
 
   /**