diff --git a/docs/api.rst b/docs/api.rst
index e657bf6e..6b695bfa 100644
--- a/docs/api.rst
+++ b/docs/api.rst
@@ -119,12 +119,6 @@ Incoming Request Data
       Libraries that do that are prototype, jQuery and Mochikit and
       probably some more.
 
-   .. attribute:: json
-
-      Contains the parsed body of the JSON request if the mimetype of
-      the incoming data was `application/json`.  This requires Python 2.6
-      or an installed version of simplejson.
-
 .. class:: request
 
    To access incoming request data, you can use the global `request`
diff --git a/flask/wrappers.py b/flask/wrappers.py
index 2d3d53f7..aed0a8d0 100644
--- a/flask/wrappers.py
+++ b/flask/wrappers.py
@@ -91,7 +91,9 @@ class Request(RequestBase):
     @cached_property
     def json(self):
         """If the mimetype is `application/json` this will contain the
-        parsed JSON data.
+        parsed JSON data.  Otherwise this will be `None`.
+
+        This requires Python 2.6 or an installed version of simplejson.
         """
         if __debug__:
             _assert_have_json()