diff --git a/spring-webflow/src/main/java/org/springframework/webflow/test/MockExternalContext.java b/spring-webflow/src/main/java/org/springframework/webflow/test/MockExternalContext.java
index 838900ae..acb13306 100644
--- a/spring-webflow/src/main/java/org/springframework/webflow/test/MockExternalContext.java
+++ b/spring-webflow/src/main/java/org/springframework/webflow/test/MockExternalContext.java
@@ -153,7 +153,7 @@ public class MockExternalContext implements ExternalContext {
 	}
 
 	public String buildFlowExecutionUrl(FlowExecutionRequestInfo requestInfo, boolean contextRelative) {
-		throw new UnsupportedOperationException("Not yet implemented");
+		return "/executions/" + requestInfo.getFlowDefinitionId() + "/" + requestInfo.getFlowExecutionKey();
 	}
 
 	public void sendFlowDefinitionRedirect(FlowDefinitionRequestInfo requestInfo) {
diff --git a/spring-webflow/src/test/java/org/springframework/webflow/mvc/MvcViewFactoryTests.java b/spring-webflow/src/test/java/org/springframework/webflow/mvc/MvcViewFactoryTests.java
index 1f623084..4fbc9793 100644
--- a/spring-webflow/src/test/java/org/springframework/webflow/mvc/MvcViewFactoryTests.java
+++ b/spring-webflow/src/test/java/org/springframework/webflow/mvc/MvcViewFactoryTests.java
@@ -25,6 +25,7 @@ import org.springframework.webflow.execution.Event;
 import org.springframework.webflow.execution.View;
 import org.springframework.webflow.execution.ViewFactory;
 import org.springframework.webflow.test.MockExternalContext;
+import org.springframework.webflow.test.MockFlowExecutionKey;
 import org.springframework.webflow.test.MockRequestContext;
 
 public class MvcViewFactoryTests extends TestCase {
@@ -56,6 +57,7 @@ public class MvcViewFactoryTests extends TestCase {
 		externalContext.setRequest(request);
 		externalContext.setResponse(response);
 		context.setExternalContext(externalContext);
+		context.getMockFlowExecutionContext().setKey(new MockFlowExecutionKey());
 		View view = viewFactory.getView(context);
 		assertEquals(false, view.eventSignaled());
 		view.render();
@@ -75,6 +77,7 @@ public class MvcViewFactoryTests extends TestCase {
 		externalContext.setRequest(request);
 		externalContext.setResponse(response);
 		context.setExternalContext(externalContext);
+		context.getMockFlowExecutionContext().setKey(new MockFlowExecutionKey());
 		View view = viewFactory.getView(context);
 		assertEquals(false, view.eventSignaled());
 		view.render();
@@ -102,6 +105,7 @@ public class MvcViewFactoryTests extends TestCase {
 		externalContext.setRequest(request);
 		externalContext.setResponse(response);
 		context.setExternalContext(externalContext);
+		context.getMockFlowExecutionContext().setKey(new MockFlowExecutionKey());
 		View view = viewFactory.getView(context);
 		assertEquals(true, view.eventSignaled());
 		Event e = view.getEvent();
@@ -132,6 +136,7 @@ public class MvcViewFactoryTests extends TestCase {
 		externalContext.setRequest(request);
 		externalContext.setResponse(response);
 		context.setExternalContext(externalContext);
+		context.getMockFlowExecutionContext().setKey(new MockFlowExecutionKey());
 		View view = viewFactory.getView(context);
 		assertEquals(true, view.eventSignaled());
 		Event e = view.getEvent();