diff --git a/ch10.md b/ch10.md
index d4708ce8..d948c9fb 100644
--- a/ch10.md
+++ b/ch10.md
@@ -253,7 +253,7 @@ To demonstrate:
 ```js
   var tOfM = compose(Task.of, Maybe.of);
 
-  liftA2(_.concat, tOfM('Rainy Days and Mondays'), tOfM(' always get me down'));
+  liftA2(liftA2(_.concat), tOfM('Rainy Days and Mondays'), tOfM(' always get me down'));
   // Task(Maybe('Rainy Days and Mondays always get me down'))
 ```