diff --git a/jsprit-core/src/main/java/com/graphhopper/jsprit/core/algorithm/recreate/LocalActivityInsertionCostsCalculator.java b/jsprit-core/src/main/java/com/graphhopper/jsprit/core/algorithm/recreate/LocalActivityInsertionCostsCalculator.java
index 0f91eab1..3e0725fe 100644
--- a/jsprit-core/src/main/java/com/graphhopper/jsprit/core/algorithm/recreate/LocalActivityInsertionCostsCalculator.java
+++ b/jsprit-core/src/main/java/com/graphhopper/jsprit/core/algorithm/recreate/LocalActivityInsertionCostsCalculator.java
@@ -37,7 +37,7 @@ import com.graphhopper.jsprit.core.problem.vehicle.Vehicle;
  *
  * @author stefan
  */
-class LocalActivityInsertionCostsCalculator implements ActivityInsertionCostsCalculator {
+public class LocalActivityInsertionCostsCalculator implements ActivityInsertionCostsCalculator {
 
     private VehicleRoutingTransportCosts routingCosts;