diff --git a/docs/guides/nested-states.md b/docs/guides/nested-states.md
index b9524db78..0fd59cdca 100644
--- a/docs/guides/nested-states.md
+++ b/docs/guides/nested-states.md
@@ -72,7 +72,8 @@ Here we create a `nested` function that defines a submachine.
 
 ```js
 // A helper function for more easily building nested state machines.
-const nested = (to, states) => createMachine(states,
+const nested = (to, states) => invoke(
+  createMachine(states),
   transition('done', to)
 );
 
@@ -90,4 +91,4 @@ const stoplight = createMachine({
     dontWalk: final()
   })
 });
-```
\ No newline at end of file
+```