diff --git a/src/components/CharacterTryListenCard.vue b/src/components/CharacterTryListenCard.vue
index 307b2c7b73..c218963917 100644
--- a/src/components/CharacterTryListenCard.vue
+++ b/src/components/CharacterTryListenCard.vue
@@ -40,7 +40,7 @@
           "
         />
         <span aria-live="polite">{{
-          selectedStyle.styleName || "ノーマル"
+          selectedStyle.styleName || DEFAULT_STYLE_NAME
         }}</span>
         <q-btn
           flat
@@ -95,6 +95,7 @@
 <script setup lang="ts">
 import { computed, ref } from "vue";
 import { CharacterInfo, SpeakerId, StyleId, StyleInfo } from "@/type/preload";
+import { DEFAULT_STYLE_NAME } from "@/store/utility";
 
 const props =
   defineProps<{
diff --git a/src/components/DefaultStyleListDialog.vue b/src/components/DefaultStyleListDialog.vue
index bc92934d03..39e57f8caa 100644
--- a/src/components/DefaultStyleListDialog.vue
+++ b/src/components/DefaultStyleListDialog.vue
@@ -79,7 +79,7 @@
                       >{{
                         selectedStyles[speaker.metas.speakerUuid]
                           ? selectedStyles[speaker.metas.speakerUuid].styleName
-                          : "ノーマル"
+                          : DEFAULT_STYLE_NAME
                       }}（{{
                         characterInfosMap[speaker.metas.speakerUuid].metas
                           .styles.length
@@ -99,6 +99,7 @@
 <script setup lang="ts">
 import { computed, ref, watch } from "vue";
 import { useStore } from "@/store";
+import { DEFAULT_STYLE_NAME } from "@/store/utility";
 import { CharacterInfo, SpeakerId, StyleInfo } from "@/type/preload";
 import DefaultStyleSelectDialog from "@/components/DefaultStyleSelectDialog.vue";
 
diff --git a/src/components/DefaultStyleSelectDialog.vue b/src/components/DefaultStyleSelectDialog.vue
index 4abf3af973..ac3e90514d 100644
--- a/src/components/DefaultStyleSelectDialog.vue
+++ b/src/components/DefaultStyleSelectDialog.vue
@@ -64,7 +64,7 @@
                 <div class="style-item-inner">
                   <img :src="style.iconPath" class="style-icon" />
                   <span class="text-subtitle1 q-ma-sm">{{
-                    style.styleName || "ノーマル"
+                    style.styleName || DEFAULT_STYLE_NAME
                   }}</span>
                   <div class="voice-samples">
                     <q-btn
@@ -123,6 +123,7 @@
 <script setup lang="ts">
 import { computed, ref, watch } from "vue";
 import { useStore } from "@/store";
+import { DEFAULT_STYLE_NAME } from "@/store/utility";
 import {
   CharacterInfo,
   DefaultStyleId,
diff --git a/src/store/audio.ts b/src/store/audio.ts
index 5a74e8a162..059d064804 100644
--- a/src/store/audio.ts
+++ b/src/store/audio.ts
@@ -23,6 +23,7 @@ import {
   extractExportText,
   extractYomiText,
   sanitizeFileName,
+  DEFAULT_STYLE_NAME,
 } from "./utility";
 import { convertAudioQueryFromEditorToEngine } from "./proxy";
 import { createPartialStore } from "./vuex";
@@ -101,7 +102,9 @@ function parseTextFile(
   for (const characterInfo of userOrderedCharacterInfos) {
     for (const style of characterInfo.metas.styles) {
       name2Voice.set(
-        `${characterInfo.metas.speakerName}(${style.styleName || "ノーマル"})`,
+        `${characterInfo.metas.speakerName}(${
+          style.styleName || DEFAULT_STYLE_NAME
+        })`,
         {
           engineId: style.engineId,
           speakerId: characterInfo.metas.speakerUuid,
@@ -437,7 +440,7 @@ export const audioStore = createPartialStore<AudioStoreTypes>({
       );
       if (style === undefined) throw new Error("assert style !== undefined");
 
-      const styleName = style.styleName || "ノーマル";
+      const styleName = style.styleName || DEFAULT_STYLE_NAME;
       return `${characterInfo.metas.speakerName}(${styleName})`;
     },
   },
@@ -1145,7 +1148,7 @@ export const audioStore = createPartialStore<AudioStoreTypes>({
       );
       if (style === undefined) throw new Error("assert style !== undefined");
 
-      const styleName = style.styleName || "ノーマル";
+      const styleName = style.styleName || DEFAULT_STYLE_NAME;
       return buildAudioFileNameFromRawData(fileNamePattern, {
         characterName: character.metas.speakerName,
         index,
@@ -1668,7 +1671,7 @@ export const audioStore = createPartialStore<AudioStoreTypes>({
             characters.set(
               `${style.engineId}:${style.styleId}`, // FIXME: 入れ子のMapにする
               `${characterInfo.metas.speakerName}(${
-                style.styleName || "ノーマル"
+                style.styleName || DEFAULT_STYLE_NAME
               })`
             );
           }
diff --git a/src/store/utility.ts b/src/store/utility.ts
index a160aaa5ec..7b12c42622 100644
--- a/src/store/utility.ts
+++ b/src/store/utility.ts
@@ -3,6 +3,8 @@ import { Platform } from "quasar";
 import { ToolbarButtonTagType, isMac } from "@/type/preload";
 import { AccentPhrase } from "@/openapi";
 
+export const DEFAULT_STYLE_NAME = "ノーマル";
+
 export function sanitizeFileName(fileName: string): string {
   // \x00 - \x1f: ASCII 制御文字
   //   \x00: Null
@@ -43,7 +45,7 @@ const DEFAULT_AUDIO_FILE_NAME_VARIABLES = {
   index: 0,
   characterName: "四国めたん",
   text: "テキストテキストテキスト",
-  styleName: "ノーマル",
+  styleName: DEFAULT_STYLE_NAME,
   date: currentDateString(),
 };