diff --git a/src/Console/Command/ListFilesCommand.php b/src/Console/Command/ListFilesCommand.php
index 4428fe6c7bd..b0d8cd6a114 100644
--- a/src/Console/Command/ListFilesCommand.php
+++ b/src/Console/Command/ListFilesCommand.php
@@ -84,6 +84,9 @@ protected function execute(InputInterface $input, OutputInterface $output)
         foreach ($finder as $file) {
             if ($file->isFile()) {
                 $relativePath = str_replace($cwd, '.', $file->getPathname());
+                // unify directory separators across operating system
+                $relativePath = str_replace('/', \DIRECTORY_SEPARATOR, $relativePath);
+
                 $output->writeln(escapeshellarg($relativePath));
             }
         }