diff --git a/src/Helpers/LocalMachineHelper.php b/src/Helpers/LocalMachineHelper.php
index 0a7b63ec6..5c9b9f1eb 100644
--- a/src/Helpers/LocalMachineHelper.php
+++ b/src/Helpers/LocalMachineHelper.php
@@ -129,7 +129,7 @@ private function executeProcess(Process $process, callable $callback = NULL, boo
       };
     }
     if ($process->getInput()) {
-      $this->runAsync($process);
+      $this->runAsync($process, $callback);
     }
     else {
       $process->run($callback);
@@ -146,8 +146,8 @@ private function executeProcess(Process $process, callable $callback = NULL, boo
   /**
    * Run the $process asynchronously as a workaround for https://github.com/symfony/symfony/issues/21580.
    */
-  private function runAsync(Process $process): void {
-    $process->start();
+  private function runAsync(Process $process, callable $callback): void {
+    $process->start($callback);
 
     // Ignore "Write of <n> bytes failed with errno=32 Broken pipe" errors.
     set_error_handler(static fn () => NULL);