diff --git a/src/test/java/io/vlingo/http/resource/sse/SseStreamResourceTest.java b/src/test/java/io/vlingo/http/resource/sse/SseStreamResourceTest.java
index <HASH>..<HASH> 100644
--- a/src/test/java/io/vlingo/http/resource/sse/SseStreamResourceTest.java
+++ b/src/test/java/io/vlingo/http/resource/sse/SseStreamResourceTest.java
@@ -133,5 +133,6 @@ public class SseStreamResourceTest {
     Configuration.define();
     context = new MockRequestResponseContext(new MockResponseSenderChannel());
     client = new SseClient(context);
+    AllSseFeedActor.registerInstantiator();
   }
 }
Ensure ActorInstantiator is registered.