diff --git a/README.md b/README.md
index 95e1bbe..e12fa98 100644
--- a/README.md
+++ b/README.md
@@ -556,7 +556,7 @@ var subtotalGetter = [
   ['items'],
   function(items) {
     // items is of type `Immutable.List`
-    return items.reduce(function(total, items) {
+    return items.reduce(function(total, item) {
       return total + (item.get('price') * item.get('quantity'))
     }, 0)
   }