fixed issue #923
fixed issue #923

UManPychron/pychron,USGSDenverPychron/pychron,NMGRL/pychron,USGSDenverPychron/pychron,USGSDenverPychron/pychron,UManPychron/pychron,UManPychron/pychron,UManPychron/pychron,NMGRL/pychron,USGSDenverPychron/pychron,NMGRL/pychron,NMGRL/pychron