diff --git a/core/src/main/java/io/temporal/samples/nexus/README.MD b/core/src/main/java/io/temporal/samples/nexus/README.MD
index 497ddc51..2483a8b3 100644
--- a/core/src/main/java/io/temporal/samples/nexus/README.MD
+++ b/core/src/main/java/io/temporal/samples/nexus/README.MD
@@ -11,7 +11,7 @@ This sample shows how to use Temporal for authoring a Nexus service and call it
 
 ### Sample directory structure
 
-- [service](./service) - shared service defintion
+- [service](./service) - shared service definition
 - [caller](./caller) - caller workflows, worker, and starter
 - [handler](./handler) - handler workflow, operations, and worker
 - [options](./options) - command line argument parsing utility
@@ -68,8 +68,8 @@ deployments with server version 1.25.0.
 
 ### Make Nexus calls across namespace boundaries
 
-> Instructions apply for local development, for Temporal Cloud or a self hosted setups, supply the relevant [CLI
-> flags](./options/cli.go) to properly set up the connection.
+> Instructions apply for local development, for Temporal Cloud or a self-hosted setups, supply the relevant [CLI
+> flags](./options/ClientOptions.java) to properly set up the connection.
 
 In separate terminal windows:
 
diff --git a/core/src/main/java/io/temporal/samples/nexus/caller/CallerStarter.java b/core/src/main/java/io/temporal/samples/nexus/caller/CallerStarter.java
index 19c0d7e0..23dd0f5e 100644
--- a/core/src/main/java/io/temporal/samples/nexus/caller/CallerStarter.java
+++ b/core/src/main/java/io/temporal/samples/nexus/caller/CallerStarter.java
@@ -39,14 +39,14 @@ public static void main(String[] args) {
         client.newWorkflowStub(EchoCallerWorkflow.class, workflowOptions);
     logger.info("Workflow result: {}", echoWorkflow.echo("Nexus Echo 👋"));
     logger.info(
-        "Started workflow workflowId: {} runId; {}",
+        "Started workflow workflowId: {} runId: {}",
         WorkflowStub.fromTyped(echoWorkflow).getExecution().getWorkflowId(),
         WorkflowStub.fromTyped(echoWorkflow).getExecution().getRunId());
     HelloCallerWorkflow helloWorkflow =
         client.newWorkflowStub(HelloCallerWorkflow.class, workflowOptions);
     logger.info("Workflow result: {}", helloWorkflow.hello("Nexus", NexusService.Language.ES));
     logger.info(
-        "Started workflow workflowId: {} runId; {}",
+        "Started workflow workflowId: {} runId: {}",
         WorkflowStub.fromTyped(helloWorkflow).getExecution().getWorkflowId(),
         WorkflowStub.fromTyped(helloWorkflow).getExecution().getRunId());
   }
diff --git a/core/src/main/java/io/temporal/samples/nexus/caller/CallerWorker.java b/core/src/main/java/io/temporal/samples/nexus/caller/CallerWorker.java
index 3f7442d0..e7be0ae4 100644
--- a/core/src/main/java/io/temporal/samples/nexus/caller/CallerWorker.java
+++ b/core/src/main/java/io/temporal/samples/nexus/caller/CallerWorker.java
@@ -25,6 +25,7 @@
 import io.temporal.worker.WorkerFactory;
 import io.temporal.worker.WorkflowImplementationOptions;
 import io.temporal.workflow.NexusServiceOptions;
+import java.util.Collections;
 
 public class CallerWorker {
   public static final String DEFAULT_TASK_QUEUE_NAME = "my-caller-workflow-task-queue";
@@ -37,8 +38,10 @@ public static void main(String[] args) {
     Worker worker = factory.newWorker(DEFAULT_TASK_QUEUE_NAME);
     worker.registerWorkflowImplementationTypes(
         WorkflowImplementationOptions.newBuilder()
-            .setDefaultNexusServiceOptions(
-                NexusServiceOptions.newBuilder().setEndpoint("my-nexus-endpoint-name").build())
+            .setNexusServiceOptions(
+                Collections.singletonMap(
+                    "NexusService",
+                    NexusServiceOptions.newBuilder().setEndpoint("my-nexus-endpoint-name").build()))
             .build(),
         EchoCallerWorkflowImpl.class,
         HelloCallerWorkflowImpl.class);