diff --git a/src/usr/lib64/python2.7/site-packages/qubes/modules/001FortressQubesVm.py b/src/usr/lib64/python2.7/site-packages/qubes/modules/001FortressQubesVm.py
index 1562e22..218a040 100644
--- a/src/usr/lib64/python2.7/site-packages/qubes/modules/001FortressQubesVm.py
+++ b/src/usr/lib64/python2.7/site-packages/qubes/modules/001FortressQubesVm.py
@@ -281,12 +281,11 @@ class QubesVm(OriginalQubesVm):
             def _add(self, ip, dev, netmask, typ):
                 netmask = sum([bin(int(x)).count('1') for x in netmask.split('.')])
                 dev = dev.replace("+", "0")
-                text = self.addrule
+                text = ""
                 if typ == "forward":
                     text += "addfwrules %s/%s\n" % (pipes.quote(ip), netmask)
                 elif typ == "postrouting":
                     text += "addprrules %s/%s %s\n" % (pipes.quote(ip), netmask, pipes.quote(dev))
-                self.addrule = ""
                 if not self.rules:
                     self.rules = []
                 self.rules.append(text)
@@ -299,8 +298,8 @@ class QubesVm(OriginalQubesVm):
 
             def commit(self):
                 if not self.rules:
-                    return self.addrule + "\ncommitrules\n"
-                return "\n".join(self.rules) + "\ncommitrules\n"
+                    return ""
+                return self.addrule + "\n".join(self.rules) + "\ncommitrules\n"
 
         programs = []
         staticipvms = []