diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/reports/HoursWorkedPerWorkerModel.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/reports/HoursWorkedPerWorkerModel.java
index f2cc6aaa8..62fa21d2c 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/reports/HoursWorkedPerWorkerModel.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/reports/HoursWorkedPerWorkerModel.java
@@ -159,6 +159,7 @@ public class HoursWorkedPerWorkerModel implements IHoursWorkedPerWorkerModel {
     @Override
     public void removeSelectedLabel(Label label) {
         this.selectedLabels.remove(label);
+        hasChangeLabels = true;
     }
 
     @Override