diff --git a/plugins/PuckDetection.java b/plugins/PuckDetection.java
index 38a18e5..54a21f4 100644
--- a/plugins/PuckDetection.java
+++ b/plugins/PuckDetection.java
@@ -11,7 +11,7 @@ import java.util.logging.Level;
 public class PuckDetection extends DeviceBase{
     public static final int PUCKS_NUMBER = 30;
     final String server;
-    Chrono chrono;
+    volatile Chrono chrono;
     
     public PuckDetection(String name, String server){
         super(name);
@@ -80,11 +80,15 @@ public class PuckDetection extends DeviceBase{
         watchDog = new Thread(new Runnable() {
             @Override
             public void run() {
-                if (chrono.isTimeout(3000)){
-                    setState(State.Offline);
-                    for (PuckState puck:pucks){
-                        puck.clear();
-                    }                    
+                try{
+                    if (chrono.isTimeout(3000)){
+                        setState(State.Offline);
+                        for (PuckState puck:pucks){
+                            puck.clear();
+                        }                    
+                    }
+                } catch (Exception ex){
+                    getLogger().log(Level.INFO, null, ex);
                 }
             }
         });