diff --git a/app/Classes/File.php b/app/Classes/File.php
index d95a509..aa34a80 100644
--- a/app/Classes/File.php
+++ b/app/Classes/File.php
@@ -28,6 +28,7 @@ class File extends FileBase implements \Iterator
 				$this->z->open($this->getRealPath());
 				break;
 
+			case NULL:
 			case 'bin':
 				if ($this->getExtension() == 'pkt' || ($path instanceof UploadedFile && $path->getClientOriginalExtension() == 'pkt')) {
 					$this->canHandle = TRUE;