diff --git a/lib/private/Archive/ZIP.php b/lib/private/Archive/ZIP.php
index e058d4760218d..e5cf1473bbf5f 100644
--- a/lib/private/Archive/ZIP.php
+++ b/lib/private/Archive/ZIP.php
@@ -47,8 +47,7 @@ class ZIP extends Archive {
 	public function __construct($source) {
 		$this->path = $source;
 		$this->zip = new \ZipArchive();
-		if ($this->zip->open($source, \ZipArchive::CREATE)) {
-		} else {
+		if (!$this->zip->open($source, \ZipArchive::CREATE | \ZipArchive::OVERWRITE)) {
 			\OCP\Util::writeLog('files_archive', 'Error while opening archive '.$source, ILogger::WARN);
 		}
 	}