diff --git a/extensions/websockets-next/server/deployment/src/test/java/io/quarkus/websockets/next/test/broadcast/BroadcastOnOpenTest.java b/extensions/websockets-next/server/deployment/src/test/java/io/quarkus/websockets/next/test/broadcast/BroadcastOnOpenTest.java
index cebc41a1e7ced..e3a93cfb35250 100644
--- a/extensions/websockets-next/server/deployment/src/test/java/io/quarkus/websockets/next/test/broadcast/BroadcastOnOpenTest.java
+++ b/extensions/websockets-next/server/deployment/src/test/java/io/quarkus/websockets/next/test/broadcast/BroadcastOnOpenTest.java
@@ -64,7 +64,7 @@ public void assertBroadcast(URI testUri) throws Exception {
                         if (r.succeeded()) {
                             WebSocket ws = r.result();
                             ws.textMessageHandler(msg -> {
-                                messages.add(msg);
+                                messages.add(msg + ":fromC1");
                                 if (msg.equals("c1")) {
                                     c1MessageLatch.countDown();
                                 } else if (msg.equals("c2")) {
@@ -79,7 +79,7 @@ public void assertBroadcast(URI testUri) throws Exception {
                     });
             assertTrue(c1MessageLatch.await(5, TimeUnit.SECONDS));
             assertEquals(1, messages.size());
-            assertEquals("c1", messages.get(0));
+            assertEquals("c1:fromC1", messages.get(0));
             messages.clear();
             // Now connect the second client
             client2
@@ -88,7 +88,7 @@ public void assertBroadcast(URI testUri) throws Exception {
                         if (r.succeeded()) {
                             WebSocket ws = r.result();
                             ws.textMessageHandler(msg -> {
-                                messages.add(msg);
+                                messages.add(msg + ":fromC2");
                                 c2MessageLatch.countDown();
                             });
                         } else {
@@ -98,8 +98,8 @@ public void assertBroadcast(URI testUri) throws Exception {
             assertTrue(c2MessageLatch.await(5, TimeUnit.SECONDS), "Messages: " + messages);
             // onOpen should be broadcasted to both clients
             assertEquals(2, messages.size());
-            assertEquals("c2", messages.get(0));
-            assertEquals("c2", messages.get(1));
+            assertEquals("c2", messages.get(0).substring(0, 2));
+            assertEquals("c2", messages.get(1).substring(0, 2));
         } finally {
             client1.close().toCompletionStage().toCompletableFuture().get();
             client2.close().toCompletionStage().toCompletableFuture().get();