diff -ru revisor-2.2.orig/revisor/pungi.py revisor-2.2/revisor/pungi.py
--- revisor-2.2.orig/revisor/pungi.py	2010-06-04 15:36:04.000000000 +0200
+++ revisor-2.2/revisor/pungi.py	2012-04-28 02:32:04.675002111 +0200
@@ -584,7 +584,7 @@
         if mt["discs"] > 1:
             volume = "%s%d" % (volume, disc)
 
-        extraargs.extend(['"%s"' % volume])
+        extraargs.extend(['%s' % volume])
         extraargs.extend(['-o', isofile])
 
         if not self.cfg.include_bootiso: