diff --git a/docs/src/pages/docs/api/date.ko.mdx b/docs/src/pages/docs/api/date.ko.mdx
index 5e872700..7073af87 100644
--- a/docs/src/pages/docs/api/date.ko.mdx
+++ b/docs/src/pages/docs/api/date.ko.mdx
@@ -39,9 +39,10 @@ days(30); // '서른날'
 <Sandpack>
 
 ```ts index.ts
-import { canBeJongseong } from 'es-hangul';
+import { days } from 'es-hangul';
 
-console.log(canBeJongseong('ㄱ'));
+console.log(days(3));
+console.log(days(4));
 ```
 
 </Sandpack>