diff --git a/src/EventCell.jsx b/src/EventCell.jsx
index f8bfa6b29..9658416fd 100644
--- a/src/EventCell.jsx
+++ b/src/EventCell.jsx
@@ -15,6 +15,9 @@ let EventCell = React.createClass({
     let title = get(event, titleAccessor)
       , end = get(event, endAccessor)
       , start = get(event, startAccessor)
+      , isAllDay = get(event, props.allDayAccessor)
+      , continuesPrior = dates.lt(start, slotStart, 'day')
+      , continuesAfter = dates.gt(end, slotEnd, 'day')
 
     if (eventPropGetter)
       var { style, className: xClassName } = eventPropGetter(event, start, end, selected);
@@ -25,8 +28,9 @@ let EventCell = React.createClass({
         style={{...props.style, ...style}}
         className={cn('rbc-event', className, xClassName, {
           'rbc-selected': selected,
-          'rbc-event-continues-prior': dates.lt(start, slotStart, 'day'),
-          'rbc-event-continues-after': dates.gt(end, slotEnd, 'day')
+          'rbc-event-allday': isAllDay || dates.diff(start, dates.ceil(end, 'day'), 'day') > 1,
+          'rbc-event-continues-prior': continuesPrior,
+          'rbc-event-continues-after': continuesAfter
         })}
         onClick={()=> onSelect(event)}
       >