diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/workingday/IntraDayDate.java b/navalplanner-business/src/main/java/org/navalplanner/business/workingday/IntraDayDate.java
index ac80534be..dcc02029a 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/workingday/IntraDayDate.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/workingday/IntraDayDate.java
@@ -41,6 +41,10 @@ import org.joda.time.Days;
 import org.joda.time.LocalDate;
 
 /**
+ * <p>
+ * Instances of this class represent values so immutable objects are used. In
+ * order to do modifications new instances must be created.
+ * </p>
  * <p>
  * A date type that represents a point inside a working day. This doesn't
  * translate directly to a concrete DateTime because the working day can start
@@ -187,10 +191,6 @@ public class IntraDayDate implements Comparable<IntraDayDate> {
         return getDate().plusDays(1);
     }
 
-    public void plus(int days) {
-        this.date = this.date.plusDays(days);
-    }
-
     public int compareTo(LocalDate other) {
         int result = this.date.compareTo(other);
         if (result != 0) {
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/consolidations/AdvanceConsolidationModel.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/consolidations/AdvanceConsolidationModel.java
index 2b9afb5d4..14845b214 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/consolidations/AdvanceConsolidationModel.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/consolidations/AdvanceConsolidationModel.java
@@ -253,8 +253,7 @@ public class AdvanceConsolidationModel implements IAdvanceConsolidationModel {
                                 Arrays.asList(resourceAllocation
                                         .asResourcesPerDayModification()))
                                 .untilAllocating(hours(pendingHours));
-                        date.plus(1);
-                        task.setIntraDayEndDate(date);
+                        task.setIntraDayEndDate(date.nextDayAtStart());
                     }
                 } else {
                     reassign(resourceAllocation, startInclusive, endExclusive,