diff --git a/ja.json b/ja.json
index e11152d..3a06a21 100644
--- a/ja.json
+++ b/ja.json
@@ -866,7 +866,7 @@
         "CreateNew.ParticleSystem": "パーティクル​システム",
         "CreateNew.LegacyParticleSystem": "レガシーパーティクルシステム",
 
-        "CreateNew.ExperimentalParticleSystem": "PhotonDust System <color=red>(警告:試験的用!)</color>",
+        "CreateNew.ExperimentalParticleSystem": "PhotonDust System <color=red>(警告:試験用!)</color>",
 
         "CreateNew.Object": "オブジェクト",
         "CreateNew.Object.AvatarCreator": "アバター​クリエイター",