diff --git a/labs/vcloud-director/src/main/java/org/jclouds/vcloud/director/v1_5/features/TaskAsyncClient.java b/labs/vcloud-director/src/main/java/org/jclouds/vcloud/director/v1_5/features/TaskAsyncClient.java
index e54c1d04d7..d73d066d85 100644
--- a/labs/vcloud-director/src/main/java/org/jclouds/vcloud/director/v1_5/features/TaskAsyncClient.java
+++ b/labs/vcloud-director/src/main/java/org/jclouds/vcloud/director/v1_5/features/TaskAsyncClient.java
@@ -35,6 +35,7 @@ import org.jclouds.vcloud.director.v1_5.domain.URISupplier;
 import org.jclouds.vcloud.director.v1_5.filters.AddVCloudAuthorizationToRequest;
 import org.jclouds.vcloud.director.v1_5.functions.OrgReferenceToTaskListEndpoint;
 import org.jclouds.vcloud.director.v1_5.functions.ThrowVCloudErrorOn4xx;
+import org.jclouds.vcloud.director.v1_5.functions.URISupplierToEndpoint;
 
 import com.google.common.util.concurrent.ListenableFuture;
 
@@ -61,7 +62,7 @@ public interface TaskAsyncClient {
    @Consumes
    @JAXBResponseParser
    @ExceptionParser(ThrowVCloudErrorOn4xx.class)
-   ListenableFuture<Task> getTask(@EndpointParam URISupplier taskRef);
+   ListenableFuture<Task> getTask(@EndpointParam(parser = URISupplierToEndpoint.class) URISupplier taskRef);
 
    /**
     * @see TaskClient#cancelTask(URI)
@@ -71,5 +72,5 @@ public interface TaskAsyncClient {
    @Consumes
    @JAXBResponseParser
    @ExceptionParser(ThrowVCloudErrorOn4xx.class)
-   ListenableFuture<Void> cancelTask(@EndpointParam URISupplier taskRef);
+   ListenableFuture<Void> cancelTask(@EndpointParam(parser = URISupplierToEndpoint.class) URISupplier taskRef);
 }