diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/GenericResourceAllocation.java b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/GenericResourceAllocation.java
index 00afbccec..a5d30a664 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/GenericResourceAllocation.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/GenericResourceAllocation.java
@@ -204,7 +204,7 @@ public class GenericResourceAllocation extends
     }
 
     @Override
-    public List<? extends DayAssignment> getAssignments() {
+    public List<GenericDayAssignment> getAssignments() {
         return DayAssignment.orderedByDay(genericDayAssignments);
     }
 
diff --git a/navalplanner-business/src/test/java/org/navalplanner/business/test/planner/entities/GenericResourceAllocationTest.java b/navalplanner-business/src/test/java/org/navalplanner/business/test/planner/entities/GenericResourceAllocationTest.java
index bbe628767..8b734ee04 100644
--- a/navalplanner-business/src/test/java/org/navalplanner/business/test/planner/entities/GenericResourceAllocationTest.java
+++ b/navalplanner-business/src/test/java/org/navalplanner/business/test/planner/entities/GenericResourceAllocationTest.java
@@ -186,7 +186,7 @@ public class GenericResourceAllocationTest {
         genericResourceAllocation.forResources(Arrays.asList(worker1))
                 .allocate(ResourcesPerDay.amount(1));
 
-        List<GenericDayAssignment> assignments = (List<GenericDayAssignment>) genericResourceAllocation
+        List<GenericDayAssignment> assignments = genericResourceAllocation
                 .getAssignments();
         assertThat(assignments,
                 haveResourceAllocation(genericResourceAllocation));