diff --git a/openvidu-test-browsers/src/main/java/io/openvidu/test/browsers/utils/webhook/CustomWebhook.java b/openvidu-test-browsers/src/main/java/io/openvidu/test/browsers/utils/webhook/CustomWebhook.java
index 32e42e17..0c276edc 100644
--- a/openvidu-test-browsers/src/main/java/io/openvidu/test/browsers/utils/webhook/CustomWebhook.java
+++ b/openvidu-test-browsers/src/main/java/io/openvidu/test/browsers/utils/webhook/CustomWebhook.java
@@ -49,9 +49,9 @@ public class CustomWebhook {
 
 	public static CountDownLatch initLatch;
 	public static int accumulatedNumberOfEvents = 0;
-	public static ConcurrentMap<String, AtomicInteger> accumulatedEvents = new ConcurrentHashMap<>();
-	static ConcurrentMap<String, BlockingQueue<JsonObject>> events = new ConcurrentHashMap<>();
-	static BlockingQueue<JsonObject> eventsInOrder = new LinkedBlockingDeque<>();
+	public final static ConcurrentMap<String, AtomicInteger> accumulatedEvents = new ConcurrentHashMap<>();
+	static final ConcurrentMap<String, BlockingQueue<JsonObject>> events = new ConcurrentHashMap<>();
+	static final BlockingQueue<JsonObject> eventsInOrder = new LinkedBlockingDeque<>();
 
 	public static void main(String[] args, CountDownLatch initLatch) {
 		CustomWebhook.initLatch = initLatch;