|  | @@ -463,7 +463,7 @@ class Service(object):
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				|  |  |                  interval = interval + drift if interval else interval
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				|  |  |                  if interval and interval > 0:
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				|  |  |                      debug('beat: Waking up %s.',
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				|  |  | -                        humanize_seconds(interval, prefix='in '))
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				|  |  | +                          humanize_seconds(interval, prefix='in '))
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				|  |  |                      time.sleep(interval)
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				|  |  |          except (KeyboardInterrupt, SystemExit):
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				|  |  |              self._is_shutdown.set()
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