diff --git a/src/client.js b/src/client.js
index 1956b9225..77d62c6f0 100644
--- a/src/client.js
+++ b/src/client.js
@@ -968,7 +968,8 @@ MatrixClient.prototype.joinRoom = function(roomIdOrAlias, opts, callback) {
         }
 
         const path = utils.encodeUri("/join/$roomid", { $roomid: roomIdOrAlias});
-        return self._http.authedRequest(undefined, "POST", path, queryString, data, reqOpts);
+        return self._http.authedRequest(
+            undefined, "POST", path, queryString, data, reqOpts);
     }).then(function(res) {
         const roomId = res.room_id;
         const syncApi = new SyncApi(self, self._clientOpts);
diff --git a/src/http-api.js b/src/http-api.js
index 65521df69..c29250d2a 100644
--- a/src/http-api.js
+++ b/src/http-api.js
@@ -668,9 +668,6 @@ module.exports.MatrixHttpApi.prototype = {
      * @param {function=} opts.bodyParser function to parse the body of the
      *    response before passing it to the promise and callback.
      *
-     * @param (object=} opts.qsStringifyOptions options for stringifying the
-     *    query string.
-     *
      * @return {module:client.Promise} a promise which resolves to either the
      * response object (if this.opts.onlyData is truthy), or the parsed
      * body. Rejects