diff --git a/src/pp.02.03-Lock/src/main/java/pp/Factory.java b/src/pp.02.03-Lock/src/main/java/pp/Factory.java
index aa9f3b8..08e2b62 100644
--- a/src/pp.02.03-Lock/src/main/java/pp/Factory.java
+++ b/src/pp.02.03-Lock/src/main/java/pp/Factory.java
@@ -3,7 +3,6 @@ package pp;
 public class Factory {
 
     private static Type instance;
-    private static Object lock = new Object();
 
     public static Type getInstance() {
         Type.prepare();