1 files changed, 1 insertions, 2 deletions

diff --git a/meta/lib/oe/rootfs.py b/meta/lib/oe/rootfs.py
index d93485819a..1fc35bdc78 100644
--- a/meta/lib/oe/rootfs.py
+++ b/meta/lib/oe/rootfs.py
@@ -10,11 +10,10 @@ import subprocess
 import re
 
 
-class Rootfs(object):
+class Rootfs(object, metaclass=ABCMeta):
     """
     This is an abstract class. Do not instantiate this directly.
     """
-    __metaclass__ = ABCMeta
 
     def __init__(self, d):
         self.d = d