diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/AllocationDTO.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/AllocationDTO.java
index ff1a26a49..757c8aba6 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/AllocationDTO.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/AllocationDTO.java
@@ -65,6 +65,10 @@ public abstract class AllocationDTO {
 
     public abstract boolean isGeneric();
 
+    public boolean isEmptyResourcesPerDay() {
+        return getResourcesPerDay().isZero();
+    }
+
     public static List<AllocationDTO> toDTOs(
             Collection<? extends ResourceAllocation<?>> resourceAllocations) {
         List<AllocationDTO> result = new ArrayList<AllocationDTO>();
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/ResourceAllocationsBeingEdited.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/ResourceAllocationsBeingEdited.java
index 61ea40883..987ed4ef2 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/ResourceAllocationsBeingEdited.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/ResourceAllocationsBeingEdited.java
@@ -100,13 +100,25 @@ public class ResourceAllocationsBeingEdited {
 
     public List<ResourceAllocationWithDesiredResourcesPerDay> asResourceAllocations() {
         List<ResourceAllocationWithDesiredResourcesPerDay> result = new ArrayList<ResourceAllocationWithDesiredResourcesPerDay>();
-        for (AllocationDTO allocation : currentAllocations) {
+        for (AllocationDTO allocation : withoutZeroResourcesPerDayAllocations(currentAllocations)) {
             result.add(createOrModify(allocation).withDesiredResourcesPerDay(
                     allocation.getResourcesPerDay()));
         }
         return result;
     }
 
+
+    private List<AllocationDTO> withoutZeroResourcesPerDayAllocations(
+            List<AllocationDTO> allocations) {
+        List<AllocationDTO> result = new ArrayList<AllocationDTO>();
+        for (AllocationDTO allocationDTO : allocations) {
+            if (!allocationDTO.isEmptyResourcesPerDay()) {
+                result.add(allocationDTO);
+            }
+        }
+        return result;
+    }
+
     public AggregateOfResourceAllocations doAllocation() {
         List<ResourceAllocationWithDesiredResourcesPerDay> allocations = asResourceAllocations();
         switch (calculatedValue) {