diff --git a/scripts/cleanCache.py b/scripts/cleanCache.py
index ebb8898c..49d59096 100755
--- a/scripts/cleanCache.py
+++ b/scripts/cleanCache.py
@@ -47,6 +47,7 @@ def doit(root, listdir, clean, suffix = ""):
 def cleanPisis(clean, root = '/var/cache/pisi/packages'):
     # pisi packages
     list = map(lambda x: os.path.basename(x).split(".pisi")[0], glob.glob("%s/*.pisi" % root))
+    list.sort()
     l = findUnneededFiles(list)
     doit(root, l, clean, ".pisi")