diff --git a/navalplanner-business/src/test/java/org/navalplanner/business/test/calendars/daos/BaseCalendarDAOTest.java b/navalplanner-business/src/test/java/org/navalplanner/business/test/calendars/daos/BaseCalendarDAOTest.java
index 93e6a83e4..be6e125f6 100644
--- a/navalplanner-business/src/test/java/org/navalplanner/business/test/calendars/daos/BaseCalendarDAOTest.java
+++ b/navalplanner-business/src/test/java/org/navalplanner/business/test/calendars/daos/BaseCalendarDAOTest.java
@@ -30,6 +30,7 @@ import static org.navalplanner.business.BusinessGlobalNames.BUSINESS_SPRING_CONF
 import static org.navalplanner.business.test.BusinessGlobalNames.BUSINESS_SPRING_CONFIG_TEST_FILE;
 
 import java.util.List;
+import java.util.UUID;
 
 import javax.annotation.Resource;
 
@@ -321,4 +322,12 @@ public class BaseCalendarDAOTest {
         assertThat(baseCalendars.size(), equalTo(previous + 2));
     }
 
+    @Test(expected = ValidationException.class)
+    public void doNotAllowToSaveCalendarWithZeroHours() {
+        BaseCalendar calendar = BaseCalendar.create("calendar-"
+                + UUID.randomUUID());
+        calendar.setName("calendar-name-" + UUID.randomUUID());
+        baseCalendarDAO.save(calendar);
+    }
+
 }