diff --git a/lib/Alchemy/Phrasea/Filesystem/PhraseanetFileSystem.php b/lib/Alchemy/Phrasea/Filesystem/PhraseanetFileSystem.php
deleted file mode 100644
index 6683900ba0..0000000000
--- a/lib/Alchemy/Phrasea/Filesystem/PhraseanetFileSystem.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-/**
- * This file is part of Phraseanet
- *
- * (c) 2005-2016 Alchemy
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Alchemy\Phrasea\Filesystem;
-
-class PhraseanetFilesystem extends \Symfony\Component\Filesystem\Filesystem
-{
-}
diff --git a/lib/Alchemy/Phrasea/Filesystem/PhraseanetFilesystem.php b/lib/Alchemy/Phrasea/Filesystem/PhraseanetFilesystem.php
new file mode 100644
index 0000000000..65b75e5834
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Filesystem/PhraseanetFilesystem.php
@@ -0,0 +1,100 @@
+<?php
+/**
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2016 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Filesystem;
+
+use Symfony\Component\Filesystem\Exception\FileNotFoundException;
+use Symfony\Component\Filesystem\Exception\IOException;
+use Symfony\Component\Filesystem\Filesystem;
+
+class PhraseanetFilesystem extends Filesystem
+{
+    /**
+     * Copies a file.
+     *
+     * Copied from \Symfony\Component\Filesystem\Filesystem::copy
+     * - add : fflush
+     * - add : copy to tmp then rename (atomic move)
+     * - change : $overwriteNewerFiles useless ; target is always overwriten
+     *
+     * @param string $originFile          The original filename
+     * @param string $targetFile          The target filename
+     * @param bool   $overwriteNewerFiles __UNUSED__
+     *
+     * @throws FileNotFoundException When originFile doesn't exist
+     * @throws IOException           When copy fails
+     */
+    public function copy($originFile, $targetFile, $overwriteNewerFiles = false)
+    {
+//        file_put_contents(dirname(__FILE__).'/../../../../logs/fs.txt', sprintf("\n%s [%s] : %s (%s); %s\n", (date('Y-m-d\TH:i:s')), getmypid(), __FILE__, __LINE__,
+//            sprintf("fs:copy(\"%s\", \"%s\")", $originFile, $targetFile)
+//        ), FILE_APPEND | LOCK_EX);
+
+        if (stream_is_local($originFile) && !is_file($originFile)) {
+            throw new FileNotFoundException(sprintf('Failed to copy "%s" because file does not exist.', $originFile), 0, null, $originFile);
+        }
+
+        $tmpTarget = sprintf("%s.%s-%s", $targetFile, time(), rand(0, 9999));
+
+        $this->mkdir(dirname($tmpTarget));
+
+        // https://bugs.php.net/bug.php?id=64634
+        if (false === $source = @fopen($originFile, 'r')) {
+            throw new IOException(sprintf('Failed to copy "%s" to "%s" because source file could not be opened for reading.', $originFile, $tmpTarget), 0, null, $originFile);
+        }
+
+        // Stream context created to allow files overwrite when using FTP stream wrapper - disabled by default
+        if (false === $target = @fopen($tmpTarget, 'w', null, stream_context_create(array('ftp' => array('overwrite' => true))))) {
+            throw new IOException(sprintf('Failed to copy "%s" to "%s" because target file could not be opened for writing.', $originFile, $tmpTarget), 0, null, $originFile);
+        }
+
+        $bytesCopied = stream_copy_to_stream($source, $target);
+
+        fclose($source);
+        // fsync($target);   // only in php 8.1
+        fflush($target);
+        fclose($target);
+        unset($source, $target);
+
+//        file_put_contents(dirname(__FILE__).'/../../../../logs/fs.txt', sprintf("\n%s [%s] : %s (%s); %s\n", (date('Y-m-d\TH:i:s')), getmypid(), __FILE__, __LINE__,
+//            sprintf("   copied %g bytes to \"%s\")", $bytesCopied, $tmpTarget)
+//        ), FILE_APPEND | LOCK_EX);
+
+        if (!is_file($tmpTarget)) {
+            throw new IOException(sprintf('Failed to copy "%s" to "%s".', $originFile, $tmpTarget), 0, null, $originFile);
+        }
+
+        // Like `cp`, preserve executable permission bits
+        @chmod($tmpTarget, fileperms($tmpTarget) | (fileperms($originFile) & 0111));
+
+        // move from tmp to final
+        try {
+            $this->rename($tmpTarget, $targetFile, true);
+        }
+        catch (\Exception $e) {
+            $this->remove($tmpTarget);
+            throw new IOException(sprintf('Failed to rename "%s" to "%s".', $tmpTarget, $targetFile), 0, null, $originFile);
+        }
+
+        if (stream_is_local($originFile) && $bytesCopied !== ($bytesOrigin = filesize($originFile))) {
+            throw new IOException(sprintf('Failed to copy the whole content of "%s" to "%s" (%g of %g bytes copied).', $originFile, $targetFile, $bytesCopied, $bytesOrigin), 0, null, $originFile);
+        }
+    }
+
+//    public function rename($origin, $target, $overwrite = false)
+//    {
+//        file_put_contents(dirname(__FILE__).'/../../../../logs/fs.txt', sprintf("\n%s [%s] : %s (%s); %s\n", (date('Y-m-d\TH:i:s')), getmypid(), __FILE__, __LINE__,
+//            sprintf("fs:rename(\"%s\", \"%s\", %s)", $origin, $target, $overwrite?'true':'false')
+//        ), FILE_APPEND | LOCK_EX);
+//
+//        parent::rename($origin, $target, $overwrite);
+//    }
+}
+