diff --git a/README.md b/README.md
index 785560b..56ab0ba 100644
--- a/README.md
+++ b/README.md
@@ -84,8 +84,8 @@ should **only** have **one** parameter, **there is no error parameter**.
 ```js
 fa.reject([0,1,2,3], function(num,cb) {
   cb(x % 2 == 0);  // no err parameter
-}, function(result) {
-  // no err parameter
+}, function(err, result) {
+  // err is always falsy
   // result: [1,3]
 }
 ```