diff --git a/core/src/main/java/org/jclouds/rest/RestContextBuilder.java b/core/src/main/java/org/jclouds/rest/RestContextBuilder.java
index 149b46e26d..c154bc1394 100755
--- a/core/src/main/java/org/jclouds/rest/RestContextBuilder.java
+++ b/core/src/main/java/org/jclouds/rest/RestContextBuilder.java
@@ -182,6 +182,6 @@ public abstract class RestContextBuilder<S, A> {
    public RestContext<S, A> buildContext() {
       Injector injector = buildInjector();
       return (RestContext<S, A>) injector.getInstance(Key.get(Types.newParameterizedType(
-               RestContext.class, asyncClientType, syncClientType)));
+               RestContext.class, syncClientType, asyncClientType)));
    }
 }