diff --git a/packages/frontend/src/store.ts b/packages/frontend/src/store.ts
index e7be2d56a5..9aba8017ff 100644
--- a/packages/frontend/src/store.ts
+++ b/packages/frontend/src/store.ts
@@ -217,11 +217,11 @@ export const defaultStore = markRaw(new Storage('base', {
 	},
 	useBlurEffectForModal: {
 		where: 'device',
-		default: !/mobile|iphone|android/.test(navigator.userAgent.toLowerCase()), // 循環参照するのでdevice-kind.tsは参照できない
+		default: false,
 	},
 	useBlurEffect: {
 		where: 'device',
-		default: !/mobile|iphone|android/.test(navigator.userAgent.toLowerCase()), // 循環参照するのでdevice-kind.tsは参照できない
+		default: false,
 	},
 	showFixedPostForm: {
 		where: 'device',