diff --git a/README.md b/README.md
index 26fa46e0..c7c39d9a 100644
--- a/README.md
+++ b/README.md
@@ -858,7 +858,7 @@ Other Style Guides
 
     // good
     [1, 2, 3].map((number, index) => ({
-      index: number
+      [index]: number
     }));
     ```