diff --git a/src/Composer/Package/Archiver/PharArchiver.php b/src/Composer/Package/Archiver/PharArchiver.php
index f9a392353e8c..baace812e15b 100644
--- a/src/Composer/Package/Archiver/PharArchiver.php
+++ b/src/Composer/Package/Archiver/PharArchiver.php
@@ -52,7 +52,12 @@ public function archive($sources, $target, $format, array $excludes = array(), $
                 $target = $filename . '.tar';
             }
 
-            $phar = new \PharData($target, null, null, static::$formats[$format]);
+            $phar = new \PharData(
+                $target,
+                FilesystemIterator::KEY_AS_PATHNAME | FilesystemIterator::CURRENT_AS_FILEINFO,
+                '',
+                static::$formats[$format]
+            );
             $files = new ArchivableFilesFinder($sources, $excludes, $ignoreFilters);
             $filesOnly = new ArchivableFilesFilter($files);
             $phar->buildFromIterator($filesOnly, $sources);