diff --git a/beta/src/content/learn/keeping-components-pure.md b/beta/src/content/learn/keeping-components-pure.md
index 60760edc5c0..6b959979e83 100644
--- a/beta/src/content/learn/keeping-components-pure.md
+++ b/beta/src/content/learn/keeping-components-pure.md
@@ -98,7 +98,7 @@ let guest = 0;
 
 function Cup() {
   // Bad: changing a preexisting variable!
-  guest = guest + 1;
+  guest = guest + 2;
   return <h2>Tea cup for guest #{guest}</h2>;
 }