diff --git a/navalplanner-business/src/main/resources/org/navalplanner/business/calendars/entities/Calendars.hbm.xml b/navalplanner-business/src/main/resources/org/navalplanner/business/calendars/entities/Calendars.hbm.xml
index f999f4cf3..a7df2ef08 100644
--- a/navalplanner-business/src/main/resources/org/navalplanner/business/calendars/entities/Calendars.hbm.xml
+++ b/navalplanner-business/src/main/resources/org/navalplanner/business/calendars/entities/Calendars.hbm.xml
@@ -37,7 +37,7 @@
         </list>
 
         <!-- Not indexed -->
-        <list name="calendarAvailabilities" access="field" cascade="all-delete-orphan">
+        <list name="calendarAvailabilities" access="field" cascade="all-delete-orphan" lazy="true">
             <key column="base_calendar_id" />
             <index column="position_in_calendar" />
             <one-to-many class="CalendarAvailability" />
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/calendars/BaseCalendarModel.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/calendars/BaseCalendarModel.java
index a7f2fd332..994699cee 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/calendars/BaseCalendarModel.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/calendars/BaseCalendarModel.java
@@ -193,7 +193,6 @@ public class BaseCalendarModel extends IntegrationEntityModel implements
             }
         }
         loadingExceptionsWithTheirTypes(baseCalendar);
-        baseCalendar.getCalendarAvailabilities().size();
     }
 
     private static void loadingExceptionsWithTheirTypes(