diff --git a/qubes/tests/integ/basic.py b/qubes/tests/integ/basic.py
index 07cea6cd..2b592182 100644
--- a/qubes/tests/integ/basic.py
+++ b/qubes/tests/integ/basic.py
@@ -572,7 +572,7 @@ class TC_03_QvmRevertTemplateChanges(qubes.tests.SystemTestCase):
 
     def get_rootimg_checksum(self):
         return subprocess.check_output(
-            ['sha1sum', self.test_template.volumes['root'].path]).\
+            ['sha1sum', self.test_template.volumes['root'].export()]).\
             decode().split(' ')[0]
 
     def _do_test(self):