diff --git a/src/pypungi/splittree.py b/src/pypungi/splittree.py
index 1f4ae5a5..a7111cb6 100644
--- a/src/pypungi/splittree.py
+++ b/src/pypungi/splittree.py
@@ -201,7 +201,7 @@ self.reserve_size : Additional size needed to be reserved on the first disc.
 
         for i in range(self.bin_list[0], self.bin_list[-1] + 1):
             if i == 1:
-                p = os.popen('find %s/ -type f -not -name .discinfo -not -name "*\.rpm"' % self.dist_dir, 'r')
+                p = os.popen('find %s/ -type f -not -name .discinfo -not -name "*\.rpm" -not -name "boot.iso"' % self.dist_dir, 'r')
                 filelist = p.read()
                 p.close()
                 filelist = string.split(filelist)