diff --git a/autotests/data/Compat-libical3/Todos.ics b/autotests/data/Compat-libical3/Todos.ics
new file mode 100644
--- /dev/null
+++ b/autotests/data/Compat-libical3/Todos.ics
@@ -0,0 +1,29 @@
+BEGIN:VCALENDAR
+VERSION:2.0
+X-WR-CALNAME:YES2
+PRODID:-//Hand crafted//iCal 1.5//EN
+BEGIN:VTIMEZONE
+TZID:Europe/Paris
+BEGIN:STANDARD
+TZOFFSETTO:0100
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETTO:0200
+END:DAYLIGHT
+END:VTIMEZONE
+BEGIN:VTODO
+DTSTART;VALUE=DATE:20040104
+DTEND;VALUE=DATE:20040105
+SUMMARY:Date only todo with start and end
+UID:76338FE5-873F-11D8-92F9-0003939BE42C
+SEQUENCE:2
+END:VTODO
+BEGIN:VTODO
+DTSTART;VALUE=DATE:20040104
+SUMMARY:Date only todo with due date
+UID:7633834F-873F-11D8-92F9-0003939BE42C
+SEQUENCE:4
+PRIORITY:1
+DUE;VALUE=DATE:20170730
+END:VTODO
+END:VCALENDAR
diff --git a/autotests/data/Compat-libical3/Todos.ics.ical.ref b/autotests/data/Compat-libical3/Todos.ics.ical.ref
new file mode 100644
--- /dev/null
+++ b/autotests/data/Compat-libical3/Todos.ics.ical.ref
@@ -0,0 +1,28 @@
+BEGIN:VCALENDAR
+PRODID:-//K Desktop Environment//NONSGML libkcal 4.3//EN
+VERSION:2.0
+X-KDE-ICAL-IMPLEMENTATION-VERSION:1.0
+X-WR-CALNAME:YES2
+BEGIN:VTODO
+DTSTAMP:20171125T103935Z
+CREATED:20171125T103935Z
+UID:76338FE5-873F-11D8-92F9-0003939BE42C
+SEQUENCE:2
+LAST-MODIFIED:20171125T103935Z
+SUMMARY:Date only todo with start and end
+DTSTART;VALUE=DATE:20040104
+PERCENT-COMPLETE:0
+END:VTODO
+BEGIN:VTODO
+DTSTAMP:20171125T103935Z
+CREATED:20171125T103935Z
+UID:7633834F-873F-11D8-92F9-0003939BE42C
+SEQUENCE:4
+LAST-MODIFIED:20171125T103935Z
+SUMMARY:Date only todo with due date
+PRIORITY:1
+DUE;VALUE=DATE:20170730
+DTSTART;VALUE=DATE:20040104
+PERCENT-COMPLETE:0
+END:VTODO
+END:VCALENDAR
diff --git a/autotests/data/Compat/Todos.ics b/autotests/data/Compat/Todos.ics
new file mode 100644
--- /dev/null
+++ b/autotests/data/Compat/Todos.ics
@@ -0,0 +1,29 @@
+BEGIN:VCALENDAR
+VERSION:2.0
+X-WR-CALNAME:YES2
+PRODID:-//Hand crafted//iCal 1.5//EN
+BEGIN:VTIMEZONE
+TZID:Europe/Paris
+BEGIN:STANDARD
+TZOFFSETTO:0100
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETTO:0200
+END:DAYLIGHT
+END:VTIMEZONE
+BEGIN:VTODO
+DTSTART;VALUE=DATE:20040104
+DTEND;VALUE=DATE:20040105
+SUMMARY:Date only todo with start and end
+UID:76338FE5-873F-11D8-92F9-0003939BE42C
+SEQUENCE:2
+END:VTODO
+BEGIN:VTODO
+DTSTART;VALUE=DATE:20040104
+SUMMARY:Date only todo with due date
+UID:7633834F-873F-11D8-92F9-0003939BE42C
+SEQUENCE:4
+PRIORITY:1
+DUE;VALUE=DATE:20170730
+END:VTODO
+END:VCALENDAR
diff --git a/autotests/data/Compat/Todos.ics.ical.ref b/autotests/data/Compat/Todos.ics.ical.ref
new file mode 100644
--- /dev/null
+++ b/autotests/data/Compat/Todos.ics.ical.ref
@@ -0,0 +1,28 @@
+BEGIN:VCALENDAR
+PRODID:-//K Desktop Environment//NONSGML libkcal 4.3//EN
+VERSION:2.0
+X-KDE-ICAL-IMPLEMENTATION-VERSION:1.0
+X-WR-CALNAME:YES2
+BEGIN:VTODO
+DTSTAMP:20171125T103935Z
+CREATED:20171125T103935Z
+UID:76338FE5-873F-11D8-92F9-0003939BE42C
+SEQUENCE:2
+LAST-MODIFIED:20171125T103935Z
+SUMMARY:Date only todo with start and end
+DTSTART;VALUE=DATE:20040104
+PERCENT-COMPLETE:0
+END:VTODO
+BEGIN:VTODO
+DTSTAMP:20171125T103935Z
+CREATED:20171125T103935Z
+UID:7633834F-873F-11D8-92F9-0003939BE42C
+SEQUENCE:4
+LAST-MODIFIED:20171125T103935Z
+SUMMARY:Date only todo with due date
+PRIORITY:1
+DUE;VALUE=DATE:20170730
+DTSTART;VALUE=DATE:20040104
+PERCENT-COMPLETE:0
+END:VTODO
+END:VCALENDAR
diff --git a/src/icalformat_p.cpp b/src/icalformat_p.cpp
--- a/src/icalformat_p.cpp
+++ b/src/icalformat_p.cpp
@@ -1187,7 +1187,7 @@
             bool allDay = false;
             QDateTime kdt = readICalDateTimeProperty(p, tzlist, false, &allDay);
             todo->setDtDue(kdt, true);
-            todo->setAllDay(false);
+            todo->setAllDay(allDay);
             break;
         }
         case ICAL_COMPLETED_PROPERTY:  // completion date/time