diff --git a/files/ja/web/api/workernavigator/mediacapabilities/index.md b/files/ja/web/api/workernavigator/mediacapabilities/index.md
index d4d1c4e4630c9f..da7e9b30252f26 100644
--- a/files/ja/web/api/workernavigator/mediacapabilities/index.md
+++ b/files/ja/web/api/workernavigator/mediacapabilities/index.md
@@ -29,7 +29,7 @@ navigator.mediaCapabilities
   .then((result) => {
     console.log(`この構成に対応していま${result.supported ? "す" : "せん"}。`);
     console.log(`スムーズ${result.smooth ? "" : "じゃない"}です。`);
-    console.log(`電力効率が${result.powerEfficient ? "よい" : "よくない"}です。`);
+    console.log(`電力効率がよ${result.powerEfficient ? "" : "くな"}いです。`);
   });
 ```