diff --git a/src/main/java/de/metas/ui/web/window/events/JSONDocumentChangedWebSocketEventCollector.java b/src/main/java/de/metas/ui/web/window/events/JSONDocumentChangedWebSocketEventCollector.java
index 30cbec469..877d6a8e7 100644
--- a/src/main/java/de/metas/ui/web/window/events/JSONDocumentChangedWebSocketEventCollector.java
+++ b/src/main/java/de/metas/ui/web/window/events/JSONDocumentChangedWebSocketEventCollector.java
@@ -40,7 +40,7 @@
  */
 
 @ToString
-public class JSONDocumentChangedWebSocketEventCollector
+class JSONDocumentChangedWebSocketEventCollector
 {
 	public static JSONDocumentChangedWebSocketEventCollector newInstance()
 	{