diff --git a/Assets/locale/ja.json b/Assets/locale/ja.json
index ebacb25b..788cec2d 100644
--- a/Assets/locale/ja.json
+++ b/Assets/locale/ja.json
@@ -451,6 +451,9 @@
     "Import mesh file": "メッシュファイルをインポート",
     "Flip Normals": "法線を反転",
     "Calculate Normals": "法線を計算",
+    "Normals": "法線",
+    "Smooth": "スムーズ",
+    "Flat": "フラット",
     "Geometry to Origin": "ジオメトリを原点に移動",
     "Rotate X": "Xで回転",
     "Rotate Y": "Yで回転",
@@ -507,7 +510,6 @@
     "Axis": "軸",
     "Rays/pix:": "レイ/ピクセル:",
     "Rays/sec:": "レイ/秒:",
-    "Smooth": "スムーズ",
     "High Poly": "ハイポリ",
     "Hold {brush_radius} and move mouse to the left or press {brush_radius_decrease} to decrease the radius\nHold {brush_radius} and move mouse to the right or press {brush_radius_increase} to increase the radius": "{brush_radius}を押しながらマウスを左に移動するか、{brush_radius_decrease}を押して半径を小さくします\n{brush_radius}を押しながらマウスを右に移動するか、{brush_radius_increase}を押して半径を大きくします",
     "Scale X": "スケールX",