diff --git a/client/src/locale/player.ja-JP.json b/client/src/locale/player.ja-JP.json
index 6552120b2..17dc2c6f2 100644
--- a/client/src/locale/player.ja-JP.json
+++ b/client/src/locale/player.ja-JP.json
@@ -1,7 +1,7 @@
 {
     "Quality": "画質",
     "Auto": "自動",
-    "Speed": "速度",
+    "Speed": "再生速度",
     "Subtitles/CC": "字幕",
     "peers": "ピア",
     "peer": "ピア",
@@ -14,8 +14,8 @@
     "Copy magnet URI": "マグネットリンクをコピー",
     "Total downloaded: ": "ダウンロード量の合計 ： ",
     "Total uploaded: ": "アップロード量の合計： ",
-    "Normal mode": "Normal mode",
-    "Theater mode": "Theater mode",
+    "Normal mode": "ノーマルモード",
+    "Theater mode": "シアターモード",
     "Audio Player": "音楽プレーヤー",
     "Video Player": "動画プレーヤー",
     "Play": "再生",