diff --git a/testing-modules/mockito/src/test/java/org/baeldung/mockito/FinalList.java b/testing-modules/mockito/src/test/java/org/baeldung/mockito/FinalList.java
index 3824de619c..c41021f7b6 100644
--- a/testing-modules/mockito/src/test/java/org/baeldung/mockito/FinalList.java
+++ b/testing-modules/mockito/src/test/java/org/baeldung/mockito/FinalList.java
@@ -1,6 +1,6 @@
 package org.baeldung.mockito;
 
-public class FinalList extends MyList {
+public final class FinalList extends MyList {
 
   @Override
   public int size() {