diff --git a/navalplanner-business/src/test/java/org/navalplanner/business/test/resources/entities/ResourceTest.java b/navalplanner-business/src/test/java/org/navalplanner/business/test/resources/entities/ResourceTest.java
index 58d56f74e..b3112df56 100644
--- a/navalplanner-business/src/test/java/org/navalplanner/business/test/resources/entities/ResourceTest.java
+++ b/navalplanner-business/src/test/java/org/navalplanner/business/test/resources/entities/ResourceTest.java
@@ -121,10 +121,10 @@ public class ResourceTest {
         Worker worker = Worker.create("firstName", "surName", "2333232");
         assertThat(worker.getCurrentCriterionsFor(type).size(), equalTo(0));
         worker.addSatisfaction(criterionWithItsType, Interval
-                .range(year(2000),year(2010)));
+                .range(year(2000),year(2020)));
         assertThat(worker.getCurrentCriterionsFor(type).size(), equalTo(1));
         worker.addSatisfaction(criterionWithItsType, Interval
-                .from(year(2010)));
+                .from(year(2020)));
         assertThat(worker.getCurrentCriterionsFor(type).size(), equalTo(1));
         worker.addSatisfaction(otherCriterionWithItsType, Interval
                 .from(year(2000)));
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/ws/common/impl/DateConverter.java b/navalplanner-webapp/src/main/java/org/navalplanner/ws/common/impl/DateConverter.java
index 109878d25..7ab1299e1 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/ws/common/impl/DateConverter.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/ws/common/impl/DateConverter.java
@@ -60,7 +60,8 @@ public class DateConverter {
             dateAsXMLGregorianCalendar =
                DatatypeFactory.newInstance().newXMLGregorianCalendarDate(
                    dateAsCalendar.get(Calendar.YEAR),
-                   dateAsCalendar.get(Calendar.MONTH),
+                   convertMonthFieldFromCalendarToXMLGregorianCalendar(
+                           dateAsCalendar.get(Calendar.MONTH)),
                    dateAsCalendar.get(Calendar.DAY_OF_MONTH),
                    DatatypeConstants.FIELD_UNDEFINED);
         } catch (DatatypeConfigurationException e) {
@@ -71,6 +72,19 @@ public class DateConverter {
 
     }
 
+    /**
+     * Converts from @{link Calendar} month field format to
+     * @{link XMLGregorianCalendar} format.
+     *
+     * It is needed the conversion because
+     * @{link XMLGregorianCalendar} months go from 1 to 12 while
+     * @{link Calendar} months go from 0 to 11
+     *
+     */
+    private final static int convertMonthFieldFromCalendarToXMLGregorianCalendar(int month) {
+        return month+1;
+    }
+
     /**
      * It converts a <code>XMLGregorianCalendar</code> representing a
      * <code>xsd:date</code> XML type to a <code>Date</code>.<br/><br/>