diff --git a/doc-src/templates/api-versions/model_documentor.rb b/doc-src/templates/api-versions/model_documentor.rb
index <HASH>..<HASH> 100644
--- a/doc-src/templates/api-versions/model_documentor.rb
+++ b/doc-src/templates/api-versions/model_documentor.rb
@@ -102,6 +102,7 @@ class MethodDocumentor
     @lines << "  Called when a response from the service is returned. If a"
     @lines << "  callback is not supplied, you must call {AWS.Request.send}"
     @lines << "  on the returned request object to initiate the request."
+    @lines << "  @context [AWS.Request] the request object being sent."
     @lines << "  @param err [Error] the error object returned from the request."
     @lines << "    Set to `null` if the request is successful."
     @lines << "  @param data [Object] the de-serialized data returned from"
diff --git a/lib/request.js b/lib/request.js
index <HASH>..<HASH> 100644
--- a/lib/request.js
+++ b/lib/request.js
@@ -327,6 +327,7 @@ AWS.Request = inherit({
    *   @callback callback function(err, data)
    *     If a callback is supplied, it is called when a response is returned
    *     from the service.
+   *     @context [AWS.Request] the request object being sent.
    *     @param err [Error] the error object returned from the request.
    *       Set to `null` if the request is successful.
    *     @param data [Object] the de-serialized data returned from
Document `this` in operation callbacks.

References #<I>