diff --git a/packages/frontend/src/utility/check-word-mute.ts b/packages/frontend/src/utility/check-word-mute.ts
index 1795f49c62..6cddc2a0b3 100644
--- a/packages/frontend/src/utility/check-word-mute.ts
+++ b/packages/frontend/src/utility/check-word-mute.ts
@@ -57,7 +57,7 @@ export function createWordMuteInfo(mutedWords: Array<string | string[]>) : WordM
 	};
 }
 
-function setWordMuteInfo(mutedWords: Array<string | string[]>, hardMutedWords: Array<string | string[]>): void {
+export function setWordMuteInfo(mutedWords: Array<string | string[]>, hardMutedWords: Array<string | string[]>): void {
 	const soft = createWordMuteInfo(mutedWords);
 	const hard = createWordMuteInfo(hardMutedWords);
 
diff --git a/packages/frontend/test/word-mute.test.ts b/packages/frontend/test/word-mute.test.ts
index 94115f92d6..1f56ce1f74 100644
--- a/packages/frontend/test/word-mute.test.ts
+++ b/packages/frontend/test/word-mute.test.ts
@@ -4,7 +4,7 @@
  */
 
 import { describe, test, assert } from 'vitest';
-import { createWordMuteInfo, checkWordMute } from '@/utility/check-word-mute.js';
+import { checkWordMute, setWordMuteInfo } from '@/utility/check-word-mute.js';
 import { NoteMock } from './mocks.js';
 
 type TestCases = {
@@ -63,10 +63,7 @@ describe('check-word-mute', () => {
 	cases.forEach((c) => {
 		test(`text: ${c.text}, cw: ${c.cw}, mutedWords: ${c.mutedWords}` , async () => {
 			// initWordMuteInfoが実行されないので代わりにここで初期化
-			(globalThis as any)._misskeyWordMute = {
-				soft: createWordMuteInfo(c.mutedWords),
-				hard: createWordMuteInfo([]),
-			}
+			setWordMuteInfo(c.mutedWords, []);
 
 			const note = NoteMock({ text: c.text, cw: c.cw });
 			const result = checkWordMute(note, null, 'soft');