diff --git a/source/java/org/alfresco/repo/calendar/cannedqueries/GetCalendarEntriesCannedQuery.java b/source/java/org/alfresco/repo/calendar/cannedqueries/GetCalendarEntriesCannedQuery.java
index e08ae30769..30fd3bb1dd 100644
--- a/source/java/org/alfresco/repo/calendar/cannedqueries/GetCalendarEntriesCannedQuery.java
+++ b/source/java/org/alfresco/repo/calendar/cannedqueries/GetCalendarEntriesCannedQuery.java
@@ -241,6 +241,7 @@ public class GetCalendarEntriesCannedQuery extends AbstractCannedQueryPermission
     
     private class CalendarEntryImpl extends org.alfresco.repo.calendar.CalendarEntryImpl
     {
+       private static final long serialVersionUID = 5717119409619436964L;
        private CalendarEntryImpl(CalendarEntity entity)
        {
           super(
diff --git a/source/java/org/alfresco/service/cmr/calendar/CalendarRecurrenceHelper.java b/source/java/org/alfresco/service/cmr/calendar/CalendarRecurrenceHelper.java
index 9e3caabaa1..027456c7fb 100644
--- a/source/java/org/alfresco/service/cmr/calendar/CalendarRecurrenceHelper.java
+++ b/source/java/org/alfresco/service/cmr/calendar/CalendarRecurrenceHelper.java
@@ -198,7 +198,7 @@ public class CalendarRecurrenceHelper
          String freq = params.get("FREQ");
          String intervalS = params.get("INTERVAL");
          int interval = 1;
-         if(intervalS == null)
+         if(intervalS != null)
          {
             try
             {