diff --git a/src/components/Talk/AudioCell.vue b/src/components/Talk/AudioCell.vue
index a7c1db4626..a69fc56a6e 100644
--- a/src/components/Talk/AudioCell.vue
+++ b/src/components/Talk/AudioCell.vue
@@ -497,26 +497,26 @@ const removeCell = async () => {
 
 // N番目のキャラクターを選ぶ
 const selectCharacterAt = (index: number) => {
-  if (userOrderedCharacterInfos.value.length >= index + 1) {
-    const speakerUuid =
-      userOrderedCharacterInfos.value[index].metas.speakerUuid;
-    const style = getDefaultStyle(
-      speakerUuid,
-      userOrderedCharacterInfos.value,
-      store.state.defaultStyleIds,
-    );
-    const voice = {
-      engineId: style.engineId,
-      speakerId: speakerUuid,
-      styleId: style.styleId,
-    };
-    store.dispatch("COMMAND_MULTI_CHANGE_VOICE", {
-      audioKeys: isMultiSelectEnabled.value
-        ? store.getters.SELECTED_AUDIO_KEYS
-        : [props.audioKey],
-      voice,
-    });
+  if (userOrderedCharacterInfos.value.length < index + 1) {
+    return;
   }
+  const speakerUuid = userOrderedCharacterInfos.value[index].metas.speakerUuid;
+  const style = getDefaultStyle(
+    speakerUuid,
+    userOrderedCharacterInfos.value,
+    store.state.defaultStyleIds,
+  );
+  const voice = {
+    engineId: style.engineId,
+    speakerId: speakerUuid,
+    styleId: style.styleId,
+  };
+  store.dispatch("COMMAND_MULTI_CHANGE_VOICE", {
+    audioKeys: isMultiSelectEnabled.value
+      ? store.getters.SELECTED_AUDIO_KEYS
+      : [props.audioKey],
+    voice,
+  });
 };
 
 // 削除ボタンの有効／無効判定
diff --git a/src/components/Talk/TalkEditor.vue b/src/components/Talk/TalkEditor.vue
index c414b2dc29..4e95ce09a2 100644
--- a/src/components/Talk/TalkEditor.vue
+++ b/src/components/Talk/TalkEditor.vue
@@ -143,6 +143,7 @@ import {
   SplitterPositionType,
   Voice,
   HotkeyActionNameType,
+  actionPostfixSelectNthCharacter,
 } from "@/type/preload";
 import { useHotkeyManager } from "@/plugins/hotkeyPlugin";
 import onetimeWatch from "@/helpers/onetimeWatch";
@@ -251,7 +252,7 @@ for (let i = 0; i < 10; i++) {
   registerHotkeyWithCleanup({
     editor: "talk",
     enableInTextbox: true,
-    name: `${i + 1}番目のキャラクターを選択` as HotkeyActionNameType,
+    name: `${i + 1}${actionPostfixSelectNthCharacter}` as HotkeyActionNameType,
     callback: () => {
       if (!uiLocked.value) {
         onCharacterSelectHotkey(i);
diff --git a/src/type/preload.ts b/src/type/preload.ts
index c30ab10dd5..631c3a92e9 100644
--- a/src/type/preload.ts
+++ b/src/type/preload.ts
@@ -62,6 +62,9 @@ export type VoiceId = z.infer<typeof voiceIdSchema>;
 export const VoiceId = (voice: Voice): VoiceId =>
   voiceIdSchema.parse(`${voice.engineId}:${voice.speakerId}:${voice.styleId}`);
 
+// 共通のアクション名
+export const actionPostfixSelectNthCharacter = "番目のキャラクターを選択";
+
 // ホットキーを追加したときは設定のマイグレーションが必要
 export const defaultHotkeySettings: HotkeySettingType[] = [
   {
@@ -175,10 +178,9 @@ export const defaultHotkeySettings: HotkeySettingType[] = [
   ...Array.from({ length: 10 }, (_, index) => {
     const roleKey = index == 9 ? 0 : index + 1;
     return {
-      action: `${index + 1}番目のキャラクターを選択` as HotkeyActionNameType,
-      combination: HotkeyCombination(
-        !isMac ? "Ctrl " + roleKey : "Meta " + roleKey,
-      ),
+      action:
+        `${index + 1}${actionPostfixSelectNthCharacter}` as HotkeyActionNameType,
+      combination: HotkeyCombination((!isMac ? "Ctrl " : "Meta ") + roleKey),
     };
   }),
 ];
@@ -467,16 +469,16 @@ export const hotkeyActionNameSchema = z.enum([
   "貼り付け",
   "すべて選択",
   "選択解除",
-  "1番目のキャラクターを選択",
-  "2番目のキャラクターを選択",
-  "3番目のキャラクターを選択",
-  "4番目のキャラクターを選択",
-  "5番目のキャラクターを選択",
-  "6番目のキャラクターを選択",
-  "7番目のキャラクターを選択",
-  "8番目のキャラクターを選択",
-  "9番目のキャラクターを選択",
-  "10番目のキャラクターを選択",
+  `1${actionPostfixSelectNthCharacter}`,
+  `2${actionPostfixSelectNthCharacter}`,
+  `3${actionPostfixSelectNthCharacter}`,
+  `4${actionPostfixSelectNthCharacter}`,
+  `5${actionPostfixSelectNthCharacter}`,
+  `6${actionPostfixSelectNthCharacter}`,
+  `7${actionPostfixSelectNthCharacter}`,
+  `8${actionPostfixSelectNthCharacter}`,
+  `9${actionPostfixSelectNthCharacter}`,
+  `10${actionPostfixSelectNthCharacter}`,
 ]);
 
 export type HotkeyActionNameType = z.infer<typeof hotkeyActionNameSchema>;