diff --git a/tests/backupcompatibility.py b/tests/backupcompatibility.py
index 71df0db8..2aa3faf4 100644
--- a/tests/backupcompatibility.py
+++ b/tests/backupcompatibility.py
@@ -49,6 +49,7 @@ QUBESXML_R2B2 = '''
   <QubesProxyVm installed_by_rpm="False" kernel="3.7.6-2" uses_default_kernelopts="True" qid="12" include_in_backups="True" uses_default_kernel="True" qrexec_timeout="60" internal="False" conf_file="test-testproxy.conf" label="red" template_qid="1" kernelopts="" memory="200" default_user="user" netvm_qid="3" volatile_img="volatile.img" services="{'meminfo-writer': True}" maxmem="1535" pcidevs="[]" name="test-testproxy" netid="3" private_img="private.img" vcpus="2" root_img="root.img" debug="False" dir_path="/var/lib/qubes/servicevms/test-testproxy"/>
   <QubesProxyVm installed_by_rpm="False" kernel="3.7.6-2" uses_default_kernelopts="True" qid="13" include_in_backups="True" uses_default_kernel="True" qrexec_timeout="60" internal="False" conf_file="testproxy2.conf" label="red" template_qid="9" kernelopts="" memory="200" default_user="user" netvm_qid="2" volatile_img="volatile.img" services="{'meminfo-writer': True}" maxmem="1535" pcidevs="[]" name="testproxy2" netid="4" private_img="private.img" vcpus="2" root_img="root.img" debug="False" dir_path="/var/lib/qubes/servicevms/testproxy2"/>
   <QubesHVm installed_by_rpm="False" netvm_qid="none" qid="14" include_in_backups="True" timezone="localtime" qrexec_timeout="60" conf_file="test-testhvm.conf" label="purple" template_qid="none" internal="False" memory="512" uses_default_netvm="True" services="{'meminfo-writer': False}" default_user="user" pcidevs="[]" name="test-testhvm" qrexec_installed="False" private_img="private.img" drive="None" vcpus="2" root_img="root.img" guiagent_installed="False" debug="False" dir_path="/var/lib/qubes/appvms/test-testhvm"/>
+  <QubesDisposableVm dispid="50" firewall_conf="firewall.xml" label="red" name="disp50" netvm_qid="2" qid="15" template_qid="1"/>
 </QubesVmCollection>
 '''