When trying to init EPEL-5 mock chroot on F-22 ppc64 machine I get an error.

[sharkcz@ibm-power7r2-02-be01 ~]$ mock -r epel-5-ppc
  File "/etc/mock/epel-5-ppc.cfg", line 6, in <module>
    if not config_opts.has_key('macros'):  config_opts['macros'] = {}

AttributeError: 'dict' object has no attribute 'has_key'

ERROR: Error in configuration


Version-Release number of selected component (if applicable):
mock-1.2.7-1.fc22.noarch