diff --git a/test/support/assert.js b/test/support/assert.js
index cc31c07a..d147f565 100644
--- a/test/support/assert.js
+++ b/test/support/assert.js
@@ -44,7 +44,7 @@ assert.imageEqualsFile = function(buffer, file_b, callback) {
  * @param {Server} server
  * @param {Object} req
  * @param {Object|Function} res
- * @param {String} msg
+ * @param {String|Function} msg
  */
 assert.response = function(server, req, res, msg){
     var port = 5555;