diff --git a/docs/stdlib/attributes.md b/docs/stdlib/attributes.md
index 1440a67..f1f3af6 100644
--- a/docs/stdlib/attributes.md
+++ b/docs/stdlib/attributes.md
@@ -635,7 +635,7 @@ Object.getOwnPropertyDescriptor(obj, 'p')
 //   configurable: false
 // }
 
-Object.defineProperty(o, 'p', {
+Object.defineProperty(obj, 'p', {
   enumerable: false
 })
 // TypeError: Cannot redefine property: p