1 files changed, 1 insertions, 1 deletions
diff --git a/test/pacman/pmpkg.py b/test/pacman/pmpkg.py
index 6a845222..e40868cc 100644
--- a/test/pacman/pmpkg.py
+++ b/test/pacman/pmpkg.py
@@ -142,7 +142,7 @@ class pmpkg(object):
         util.mkdir(os.path.dirname(self.path))
 
         # Generate package metadata
-        tar = tarfile.open(self.path, "w:gz")
+        tar = tarfile.open(self.path, "w:gz", format=tarfile.GNU_FORMAT)
         for name, data in archive_files:
             info = tarfile.TarInfo(name)
             info.size = len(data)