diff --git a/lib/util.js b/lib/util.js
index 0a4abaf..d515301 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -90,7 +90,7 @@ function extend(object, fromObject, getters, ignores, originalName, setters) {
 /**
  * and
  *
- * run promise object step by step.
+ * run promise object series or parallel
  *
  * and( aPromise )
  * 	.and( function( aValue ){