diff --git a/packages/backend/src/remote/activitypub/models/question.ts b/packages/backend/src/remote/activitypub/models/question.ts
index 5d88e1d44..803acee66 100644
--- a/packages/backend/src/remote/activitypub/models/question.ts
+++ b/packages/backend/src/remote/activitypub/models/question.ts
@@ -23,7 +23,7 @@ export async function extractPollFromQuestion(source: string | IObject, resolver
 		.map(x => x.name!);
 
 	const votes = question[multiple ? 'anyOf' : 'oneOf']!
-		.map(x => x.replies && x.replies.totalItems || x._misskey_votes || 0);
+		.map(x => x.replies && x.replies.totalItems || 0);
 
 	return {
 		choices,
diff --git a/packages/backend/src/remote/activitypub/renderer/index.ts b/packages/backend/src/remote/activitypub/renderer/index.ts
index 0ea143cda..b66f766a2 100644
--- a/packages/backend/src/remote/activitypub/renderer/index.ts
+++ b/packages/backend/src/remote/activitypub/renderer/index.ts
@@ -36,7 +36,6 @@ export const renderActivity = (x: any): IActivity | null => {
 				// Misskey
 				misskey: 'https://misskey-hub.net/ns#',
 				'_misskey_quote': 'misskey:_misskey_quote',
-				'_misskey_votes': 'misskey:_misskey_votes',
 				'_misskey_talk': 'misskey:_misskey_talk',
 				'isCat': 'misskey:isCat',
 				// vcard
diff --git a/packages/backend/src/remote/activitypub/renderer/question.ts b/packages/backend/src/remote/activitypub/renderer/question.ts
index d4d1b590a..a6116888a 100644
--- a/packages/backend/src/remote/activitypub/renderer/question.ts
+++ b/packages/backend/src/remote/activitypub/renderer/question.ts
@@ -11,7 +11,6 @@ export default async function renderQuestion(user: { id: User['id'] }, note: Not
 		content: note.text || '',
 		[poll.multiple ? 'anyOf' : 'oneOf']: poll.choices.map((text, i) => ({
 			name: text,
-			_misskey_votes: poll.votes[i],
 			replies: {
 				type: 'Collection',
 				totalItems: poll.votes[i],
diff --git a/packages/backend/src/remote/activitypub/type.ts b/packages/backend/src/remote/activitypub/type.ts
index a14133ddc..b4d0499c5 100644
--- a/packages/backend/src/remote/activitypub/type.ts
+++ b/packages/backend/src/remote/activitypub/type.ts
@@ -171,7 +171,6 @@ export const isQuestion = (object: IObject): object is IQuestion =>
 interface IQuestionChoice {
 	name?: string;
 	replies?: ICollection;
-	_misskey_votes?: number;
 }
 export interface ITombstone extends IObject {
 	type: 'Tombstone';