diff --git a/src/locales/ja/achv.json b/src/locales/ja/achv.json
index 874e331015a..66756446642 100644
--- a/src/locales/ja/achv.json
+++ b/src/locales/ja/achv.json
@@ -273,12 +273,5 @@
   "BREEDERS_IN_SPACE": {
     "name": "宇宙のブリーダー！",
     "description": "宇宙バイオームで　エキスパートブリーダーを　倒す"
-  },
-  "trickRoom": {
-    "name": "Trick Room",
-    "shortName": "Trick Room",
-    "desc": "All battles are under the effect of Trick Room, where slower Pokémon move sooner and faster Pokémon move later.\nDisables other challenges' achievements.",
-    "value.0": "Off",
-    "value.1": "On"
   }
 }