diff --git a/client/i18n/locales/japanese/intro.json b/client/i18n/locales/japanese/intro.json
index 3bbc2e6fd0d..6938aeee565 100644
--- a/client/i18n/locales/japanese/intro.json
+++ b/client/i18n/locales/japanese/intro.json
@@ -302,8 +302,8 @@
   "2022/javascript-algorithms-and-data-structures": {
     "title": "JavaScript アルゴリズムとデータ構造 (ベータ版)",
     "intro": [
-      "プレイスホルダ―",
-      "プレイスホルダ―"
+      "プレイスホルダー",
+      "プレイスホルダー"
     ],
     "note": "",
     "blocks": {