diff --git a/src/store/setting.ts b/src/store/setting.ts
index bf69b6ac..949071a3 100644
--- a/src/store/setting.ts
+++ b/src/store/setting.ts
@@ -63,8 +63,8 @@ export const settingStoreState: SettingStoreState = {
   },
   engineSettings: {},
   enableMultiEngine: true,
-  enableMemoNotation: true,
-  enableRubyNotation: true,
+  enableMemoNotation: false,
+  enableRubyNotation: false,
 };
 
 export const settingStore = createPartialStore<SettingStoreTypes>({
diff --git a/src/type/preload.ts b/src/type/preload.ts
index d371c34b..89f0b577 100644
--- a/src/type/preload.ts
+++ b/src/type/preload.ts
@@ -608,8 +608,8 @@ export const rootMiscSettingSchema = z.object({
     .default("PERIOD_AND_NEW_LINE"),
   splitterPosition: splitterPositionSchema.default({}),
   enableMultiEngine: z.boolean().default(true),
-  enableMemoNotation: z.boolean().default(true), // メモ記法を有効にするか
-  enableRubyNotation: z.boolean().default(true), // ルビ記法を有効にするか
+  enableMemoNotation: z.boolean().default(false), // メモ記法を有効にするか
+  enableRubyNotation: z.boolean().default(false), // ルビ記法を有効にするか
   skipUpdateVersion: z.string().optional(), // アップデートをスキップしたバージョン
 });
 export type RootMiscSettingType = z.infer<typeof rootMiscSettingSchema>;