diff --git a/akka-docs/src/test/java/jdocs/io/JavaUdpMulticastTest.java b/akka-docs/src/test/java/jdocs/io/JavaUdpMulticastTest.java
index 7aa68683f1..89188beb40 100644
--- a/akka-docs/src/test/java/jdocs/io/JavaUdpMulticastTest.java
+++ b/akka-docs/src/test/java/jdocs/io/JavaUdpMulticastTest.java
@@ -31,6 +31,10 @@ public class JavaUdpMulticastTest extends AbstractJavaTest {
   }
 
   @Test
+  public void dummy() {}
+
+  // disabled until we figure #28147 out
+  // @Test
   public void testUdpMulticast() throws Exception {
     new TestKit(system) {
       {