Index: openacs-4/packages/calendar/www/view-month-display.adp
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/calendar/www/view-month-display.adp,v
diff -u -N -r1.23.6.2 -r1.23.6.3
--- openacs-4/packages/calendar/www/view-month-display.adp	18 Jan 2017 08:26:36 -0000	1.23.6.2
+++ openacs-4/packages/calendar/www/view-month-display.adp	24 Feb 2017 15:50:19 -0000	1.23.6.3
@@ -37,7 +37,7 @@
           &nbsp;<span class="screen-reader-only">[</span><a href="@items.day_url@" title="#calendar.goto_day_items_pretty_date#">@items.day_number@</a><span class="screen-reader-only"> ]</span>
 
           <group column="day_number">
-            <if @items.event_name@ true>
+            <if @items.event_name@ ne "">
               <div class="cal-month-event @items.style_class@">
                 <a href="@items.event_url@" title="#calendar.goto_items_event_name#">
                   <if @items.time_p;literal@ true>@items.start_time@</if>