diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/CalDAVHelper.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/CalDAVHelper.kt
index 5311ca232..6cbb5c435 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/CalDAVHelper.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/CalDAVHelper.kt
@@ -409,7 +409,7 @@ class CalDAVHelper(val context: Context) {
                 put(CalendarContract.Events.RRULE, repeatRule)
             }
 
-            if (event.getIsAllDay() && event.endTS > event.startTS)
+            if (event.getIsAllDay() && event.endTS >= event.startTS)
                 event.endTS += DAY
 
             if (event.repeatInterval > 0) {