diff --git a/jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/constraint/MaxTimeInVehicleConstraint.java b/jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/constraint/MaxTimeInVehicleConstraint.java
index 13165636..a2e67084 100644
--- a/jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/constraint/MaxTimeInVehicleConstraint.java
+++ b/jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/constraint/MaxTimeInVehicleConstraint.java
@@ -106,7 +106,7 @@ public class MaxTimeInVehicleConstraint implements HardActivityConstraint {
             try {
                 minSlack = stateManager.getActivityState(nextAct, iFacts.getNewVehicle(), minSlackId, Double.class);
             } catch (NullPointerException npe) {
-
+                //solving maxTimeInVehicle constraint
             }
         }
         double directArrTimeNextAct = prevActDepTime + transportTime.getTransportTime(prevAct.getLocation(), nextAct.getLocation(), prevActDepTime, iFacts.getNewDriver(), iFacts.getNewVehicle());
diff --git a/jsprit-core/src/test/java/com/graphhopper/jsprit/core/algorithm/MaxTimeInVehicleTest.java b/jsprit-core/src/test/java/com/graphhopper/jsprit/core/algorithm/MaxTimeInVehicleTest.java
index 89955ce4..63d7da65 100644
--- a/jsprit-core/src/test/java/com/graphhopper/jsprit/core/algorithm/MaxTimeInVehicleTest.java
+++ b/jsprit-core/src/test/java/com/graphhopper/jsprit/core/algorithm/MaxTimeInVehicleTest.java
@@ -220,7 +220,7 @@ public class MaxTimeInVehicleTest {
             .build();
 
         Delivery d2 = Delivery.Builder.newInstance("d2")
-            .setMaxTimeInVehicle(15)
+            .setMaxTimeInVehicle(14)
             .setLocation(Location.newInstance(10, 5)).setServiceTime(2).build();
 
         VehicleImpl v1 = VehicleImpl.Builder.newInstance("v1")