diff --git a/jsprit-core/src/main/java/jsprit/core/algorithm/state/StateManager.java b/jsprit-core/src/main/java/jsprit/core/algorithm/state/StateManager.java
index 37125436..fc23cf9d 100644
--- a/jsprit-core/src/main/java/jsprit/core/algorithm/state/StateManager.java
+++ b/jsprit-core/src/main/java/jsprit/core/algorithm/state/StateManager.java
@@ -151,7 +151,7 @@ public class StateManager implements RouteAndActivityStateGetter, IterationStart
 		addDefaultStates();
 	}
 	
-	public <T> void putDefaultProblemState(StateId stateId, Class<T> type, T defaultState){
+	public <T> void addDefaultProblemState(StateId stateId, Class<T> type, T defaultState){
 		defaultProblemStates_.putState(stateId, type, defaultState); 
 	}
 	
@@ -403,7 +403,7 @@ public class StateManager implements RouteAndActivityStateGetter, IterationStart
 	/**
 	 * Adds state updater.
 	 * 
-	 * <p>Note that a state update occurs if route and/or activity states change, i.e. if jobs are removed
+	 * <p>Note that a state update occurs if route and/or activity states have changed, i.e. if jobs are removed
 	 * or inserted into a route. Thus here, it is assumed that a state updater is either of type InsertionListener, 
 	 * RuinListener, ActivityVisitor, ReverseActivityVisitor, RouteVisitor, ReverseRouteVisitor. 
 	 * 
@@ -421,6 +421,8 @@ public class StateManager implements RouteAndActivityStateGetter, IterationStart
 		updaters.add(updater);
 	}
 	
+	
+	
 	Collection<StateUpdater> getStateUpdaters(){
 		return Collections.unmodifiableCollection(updaters);
 	}
diff --git a/jsprit-core/src/test/java/jsprit/core/algorithm/state/StateManagerTest.java b/jsprit-core/src/test/java/jsprit/core/algorithm/state/StateManagerTest.java
index 620c808b..79ce1316 100644
--- a/jsprit-core/src/test/java/jsprit/core/algorithm/state/StateManagerTest.java
+++ b/jsprit-core/src/test/java/jsprit/core/algorithm/state/StateManagerTest.java
@@ -167,7 +167,7 @@ public class StateManagerTest {
 	public void whenProblemStateIsSetAndStateManagerClearedAfterwards_itReturnsDefault(){
 		StateManager stateManager = new StateManager(mock(VehicleRoutingTransportCosts.class));
 		StateId id = StateFactory.createId("problemState");
-		stateManager.putDefaultProblemState(id, Boolean.class, false);
+		stateManager.addDefaultProblemState(id, Boolean.class, false);
 		stateManager.putProblemState(id, Boolean.class, true);
 		stateManager.clear();
 		boolean problemState = stateManager.getProblemState(id, Boolean.class);