diff -Nurp VirtualBox-5.1.0.p14/src/VBox/Frontends/VirtualBox/src/net/UIUpdateDefs.cpp VirtualBox-5.1.0.p15/src/VBox/Frontends/VirtualBox/src/net/UIUpdateDefs.cpp --- VirtualBox-5.1.0.p14/src/VBox/Frontends/VirtualBox/src/net/UIUpdateDefs.cpp 2016-07-12 17:54:04.000000000 +0300 +++ VirtualBox-5.1.0.p15/src/VBox/Frontends/VirtualBox/src/net/UIUpdateDefs.cpp 2016-07-13 01:43:54.538249605 +0300 @@ -163,7 +163,7 @@ void VBoxUpdateData::decode() if (m_dayList.isEmpty()) populate(); PeriodType index = (PeriodType)m_dayList.indexOf(VBoxUpdateDay(QString(), parser[0])); - m_periodIndex = index == PeriodUndefined ? Period1Day : index; + m_periodIndex = index == PeriodUndefined ? PeriodNever : index; } /* Parse 'date' value: */