diff --git a/packages/frontend/src/utility/sound.ts b/packages/frontend/src/utility/sound.ts
index d3f82a37f2..217da9c8b2 100644
--- a/packages/frontend/src/utility/sound.ts
+++ b/packages/frontend/src/utility/sound.ts
@@ -133,7 +133,7 @@ export function playMisskeySfx(operationType: OperationType) {
 	playMisskeySfxFile(sound).then((succeed) => {
 		if (!succeed && sound.type === '_driveFile_') {
 			// ドライブファイルが存在しない場合はデフォルトのサウンドを再生する
-			const soundName = PREF_DEF[`sound_${operationType}`].default.type as Exclude<SoundType, '_driveFile_'>;
+			const soundName = PREF_DEF[`sound.on.${operationType}`].default.type as Exclude<SoundType, '_driveFile_'>;
 			if (_DEV_) console.log(`Failed to play sound: ${sound.fileUrl}, so play default sound: ${soundName}`);
 			playMisskeySfxFileInternal({
 				type: soundName,