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 f5dff3046..acb1a4793 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
@@ -130,7 +130,7 @@ public class GenericResourceAllocation extends ResourceAllocation {
             }
             Integer workableHours = SameWorkHoursEveryDay
                     .getDefaultWorkingDay().getWorkableHours(day);
-            return resourcesPerDay.getAmount() * workableHours;
+            return resourcesPerDay.asHoursGivenResourceWorkingDayOf(workableHours);
         }
 
         private boolean isTaskFreeDay(LocalDate day) {
diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/ResourcePerDayUnit.java b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/ResourcePerDayUnit.java
index 1fc372c81..fdc0f62f0 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/ResourcePerDayUnit.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/ResourcePerDayUnit.java
@@ -8,7 +8,6 @@ public class ResourcePerDayUnit {
 
     public static ResourcePerDayUnit amount(int amount) {
         return new ResourcePerDayUnit(amount);
-
     }
 
     private ResourcePerDayUnit(int amount) {
@@ -19,4 +18,9 @@ public class ResourcePerDayUnit {
     public int getAmount() {
         return amount;
     }
+
+    public int asHoursGivenResourceWorkingDayOf(
+            Integer resourceWorkingDayHours) {
+        return getAmount() * resourceWorkingDayHours;
+    }
 }
diff --git a/navalplanner-business/src/test/java/org/navalplanner/business/test/planner/entities/ResourcePerDayUnitTest.java b/navalplanner-business/src/test/java/org/navalplanner/business/test/planner/entities/ResourcePerDayUnitTest.java
index 848329084..09451fffd 100644
--- a/navalplanner-business/src/test/java/org/navalplanner/business/test/planner/entities/ResourcePerDayUnitTest.java
+++ b/navalplanner-business/src/test/java/org/navalplanner/business/test/planner/entities/ResourcePerDayUnitTest.java
@@ -19,4 +19,10 @@ public class ResourcePerDayUnitTest {
         assertThat(units.getAmount(), equalTo(2));
     }
 
+    @Test
+    public void canBeConvertedToHoursGivenTheWorkingDayHours() {
+        ResourcePerDayUnit units = ResourcePerDayUnit.amount(2);
+        assertThat(units.asHoursGivenResourceWorkingDayOf(8), equalTo(16));
+    }
+
 }