diff --git a/Translations/translation_JA_JP.json b/Translations/translation_JA_JP.json
index 103d8afe..d27299cc 100755
--- a/Translations/translation_JA_JP.json
+++ b/Translations/translation_JA_JP.json
@@ -7,7 +7,7 @@
 	],
 	"tempUnitFahrenheit": true,
 	"messages": {
-		"SettingsCalibrationWarning": "Please make sure tip & handle are at room temperature at next boot!",
+		"SettingsCalibrationWarning": "次に電源を入れるときは、コテ先と本体が室温と同じになっていることを確認してください",
 		"SettingsResetWarning": "設定をリセットしますか？",
 		"UVLOWarningString": "電圧が低すぎます",
 		"UndervoltageString": "Undervoltage",
@@ -16,7 +16,7 @@
 		"SleepingAdvancedString": "Sleeping...",
 		"SleepingTipAdvancedString": "Tip:",
 		"OffString": "オフ",
-		"DeviceFailedValidationWarning": "Your device is most likely a counterfeit!"
+		"DeviceFailedValidationWarning": "このデバイスはおそらく偽造品です"
 	},
 	"messagesWarn": {
 		"ResetOKMessage": "リセットOK",
@@ -167,11 +167,8 @@
 			"desc": "画面の色を反転する"
 		},
 		"LOGOTime": {
-			"text2": [
-				"Boot logo",
-				"duration"
-			],
-			"desc": "Set boot logo duration (s=seconds)"
+			"text2": "起動画面",
+			"desc": "起動画面の表示時間を設定する"
 		},
 		"AdvancedIdle": {
 			"text2": "詳細な待受画面",