diff --git a/py/mockbuild/scm.py b/py/mockbuild/scm.py
index d7380d206..fa44c598c 100644
--- a/py/mockbuild/scm.py
+++ b/py/mockbuild/scm.py
@@ -16,6 +16,9 @@
 from . import util
 from .trace_decorator import traceLog
 
+if six.PY2:
+    class PermissionError(OSError):
+        pass
 
 class scmWorker(object):
     """Build RPMs from SCM"""