diff --git a/jsprit-core/src/main/java/jsprit/core/algorithm/ruin/listener/RuinListener.java b/jsprit-core/src/main/java/jsprit/core/algorithm/ruin/listener/RuinListener.java
index 683f21c7..bbb150d4 100644
--- a/jsprit-core/src/main/java/jsprit/core/algorithm/ruin/listener/RuinListener.java
+++ b/jsprit-core/src/main/java/jsprit/core/algorithm/ruin/listener/RuinListener.java
@@ -18,12 +18,12 @@
  ******************************************************************************/
 package jsprit.core.algorithm.ruin.listener;
 
-import java.util.Collection;
-
 import jsprit.core.algorithm.listener.SearchStrategyModuleListener;
 import jsprit.core.problem.job.Job;
 import jsprit.core.problem.solution.route.VehicleRoute;
 
+import java.util.Collection;
+
 
 /**
  * Listener that listens to the ruin-process. It informs whoever is interested about start, end and about a removal of a job.