diff --git a/roa/README.txt b/roa/README.txt
index d95ae0a..c1036eb 100644
--- a/roa/README.txt
+++ b/roa/README.txt
@@ -20,4 +20,4 @@ Providing object data in JSON format
   >>> obj = Demo('test')
   >>> jsv = JSONView(obj, TestRequest())
   >>> jsv()
-  '{"name": "test"}'
+  '["name"]'
diff --git a/roa/json.py b/roa/json.py
index 2fd1a73..39ebe23 100644
--- a/roa/json.py
+++ b/roa/json.py
@@ -32,9 +32,9 @@ class JSONView(object):
         self.request = request
 
     def __call__(self):
-        return json.dumps(self.context.__dict__)
+        return json.dumps(self.context.__dict__.keys())
 
     def traverse(self, name):
         # To be implemented by subclass
         print '*** traversing', self.context, name
-        return None
+        return self.context
diff --git a/roa/traversal.py b/roa/traversal.py
index fbabd4f..42c31e3 100644
--- a/roa/traversal.py
+++ b/roa/traversal.py
@@ -15,6 +15,7 @@
 #  along with this program; if not, write to the Free Software
 #  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 #
+
 """
 IPublishTraverse adapter that checks the 'Accept' header.
 
@@ -49,4 +50,9 @@ class CheckJSONTraverser(ItemTraverser):
         return view.traverse(name)
 
     def defaultTraverse(self, request, name):
-        return super(CheckAcceptTraverser, self).publishTraverse(request, name)
+        return super(CheckJSONTraverser, self).publishTraverse(request, name)
+
+    def browserDefault(self, request):
+        if self.isJSONRequest(request):
+            return self.context, ('@@json',)
+        return super(CheckJSONTraverser, self).browserDefault(request)
diff --git a/roa/z2/traversal.py b/roa/z2/traversal.py
index 21a5b7d..7aa9dc6 100644
--- a/roa/z2/traversal.py
+++ b/roa/z2/traversal.py
@@ -28,5 +28,8 @@ from cybertools.roa.traversal import CheckJSONTraverser as BaseTraverser
 class CheckJSONTraverser(BaseTraverser, DefaultPublishTraverse):
 
     defaultTraverse = DefaultPublishTraverse.publishTraverse
-    browserDefault = DefaultPublishTraverse.browserDefault
 
+    def browserDefault(self, request):
+        if self.isJSONRequest(request):
+            return self.context, ('@@json',)
+        return DefaultPublishTraverse.browserDefault(self, request)