diff --git a/src/server/api/common/generate-replies-query.ts b/src/server/api/common/generate-replies-query.ts
new file mode 100644
index 000000000..c7ca742e2
--- /dev/null
+++ b/src/server/api/common/generate-replies-query.ts
@@ -0,0 +1,27 @@
+import { User } from '../../../models/entities/user';
+import { Brackets, SelectQueryBuilder } from 'typeorm';
+
+export function generateRepliesQuery(q: SelectQueryBuilder<any>, me?: User) {
+	if (me == null) {
+		q.andWhere(new Brackets(qb => { qb
+			.where(`note.replyId IS NULL`) // 返信ではない
+			.orWhere(new Brackets(qb => { qb // 返信だけど投稿者自身への返信
+				.where(`note.replyId IS NOT NULL`)
+				.andWhere('note.replyUserId = note.userId');
+			}));
+		}));
+	} else {
+		q.andWhere(new Brackets(qb => { qb
+			.where(`note.replyId IS NULL`) // 返信ではない
+			.orWhere('note.replyUserId = :meId', { meId: me.id }) // 返信だけど自分のノートへの返信
+			.orWhere(new Brackets(qb => { qb // 返信だけど自分の行った返信
+				.where(`note.replyId IS NOT NULL`)
+				.andWhere('note.userId = :meId', { meId: me.id });
+			}))
+			.orWhere(new Brackets(qb => { qb // 返信だけど投稿者自身への返信
+				.where(`note.replyId IS NOT NULL`)
+				.andWhere('note.replyUserId = note.userId');
+			}));
+		}));
+	}
+}
diff --git a/src/server/api/endpoints/notes/global-timeline.ts b/src/server/api/endpoints/notes/global-timeline.ts
index 15f495576..7475c8f07 100644
--- a/src/server/api/endpoints/notes/global-timeline.ts
+++ b/src/server/api/endpoints/notes/global-timeline.ts
@@ -8,6 +8,7 @@ import { Notes } from '../../../../models';
 import { generateMuteQuery } from '../../common/generate-mute-query';
 import { activeUsersChart } from '../../../../services/chart';
 import { Brackets } from 'typeorm';
+import { generateRepliesQuery } from '../../common/generate-replies-query';
 
 export const meta = {
 	desc: {
@@ -77,21 +78,9 @@ export default define(meta, async (ps, user) => {
 	const query = makePaginationQuery(Notes.createQueryBuilder('note'),
 			ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
 		.andWhere('note.visibility = \'public\'')
-		.andWhere('note.replyId IS NULL')
-		.andWhere(new Brackets(qb => { qb
-			.where(`note.replyId IS NULL`) // 返信ではない
-			.orWhere('note.replyUserId = :meId', { meId: user.id }) // 返信だけど自分のノートへの返信
-			.orWhere(new Brackets(qb => { qb // 返信だけど自分の行った返信
-				.where(`note.replyId IS NOT NULL`)
-				.andWhere('note.userId = :meId', { meId: user.id });
-			}))
-			.orWhere(new Brackets(qb => { qb // 返信だけど投稿者自身への返信
-				.where(`note.replyId IS NOT NULL`)
-				.andWhere('note.replyUserId = note.userId', { meId: user.id });
-			}));
-		}))
 		.leftJoinAndSelect('note.user', 'user');
 
+	generateRepliesQuery(query, user);
 	if (user) generateMuteQuery(query, user);
 
 	if (ps.withFiles) {
diff --git a/src/server/api/endpoints/notes/hybrid-timeline.ts b/src/server/api/endpoints/notes/hybrid-timeline.ts
index a4f376f8e..5aa18b2e9 100644
--- a/src/server/api/endpoints/notes/hybrid-timeline.ts
+++ b/src/server/api/endpoints/notes/hybrid-timeline.ts
@@ -9,6 +9,7 @@ import { Brackets } from 'typeorm';
 import { generateVisibilityQuery } from '../../common/generate-visibility-query';
 import { generateMuteQuery } from '../../common/generate-mute-query';
 import { activeUsersChart } from '../../../../services/chart';
+import { generateRepliesQuery } from '../../common/generate-replies-query';
 
 export const meta = {
 	desc: {
@@ -124,21 +125,10 @@ export default define(meta, async (ps, user) => {
 			qb.where(`((note.userId IN (${ followingQuery.getQuery() })) OR (note.userId = :meId))`, { meId: user.id })
 				.orWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)');
 		}))
-		.andWhere(new Brackets(qb => { qb
-			.where(`note.replyId IS NULL`) // 返信ではない
-			.orWhere('note.replyUserId = :meId', { meId: user.id }) // 返信だけど自分のノートへの返信
-			.orWhere(new Brackets(qb => { qb // 返信だけど自分の行った返信
-				.where(`note.replyId IS NOT NULL`)
-				.andWhere('note.userId = :meId', { meId: user.id });
-			}))
-			.orWhere(new Brackets(qb => { qb // 返信だけど投稿者自身への返信
-				.where(`note.replyId IS NOT NULL`)
-				.andWhere('note.replyUserId = note.userId', { meId: user.id });
-			}));
-		}))
 		.leftJoinAndSelect('note.user', 'user')
 		.setParameters(followingQuery.getParameters());
 
+	generateRepliesQuery(query, user);
 	generateVisibilityQuery(query, user);
 	generateMuteQuery(query, user);
 
diff --git a/src/server/api/endpoints/notes/local-timeline.ts b/src/server/api/endpoints/notes/local-timeline.ts
index 71ebceb0e..06f00969a 100644
--- a/src/server/api/endpoints/notes/local-timeline.ts
+++ b/src/server/api/endpoints/notes/local-timeline.ts
@@ -9,6 +9,7 @@ import { makePaginationQuery } from '../../common/make-pagination-query';
 import { generateVisibilityQuery } from '../../common/generate-visibility-query';
 import { activeUsersChart } from '../../../../services/chart';
 import { Brackets } from 'typeorm';
+import { generateRepliesQuery } from '../../common/generate-replies-query';
 
 export const meta = {
 	desc: {
@@ -93,20 +94,9 @@ export default define(meta, async (ps, user) => {
 	const query = makePaginationQuery(Notes.createQueryBuilder('note'),
 			ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
 		.andWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)')
-		.andWhere(new Brackets(qb => { qb
-			.where(`note.replyId IS NULL`) // 返信ではない
-			.orWhere('note.replyUserId = :meId', { meId: user.id }) // 返信だけど自分のノートへの返信
-			.orWhere(new Brackets(qb => { qb // 返信だけど自分の行った返信
-				.where(`note.replyId IS NOT NULL`)
-				.andWhere('note.userId = :meId', { meId: user.id });
-			}))
-			.orWhere(new Brackets(qb => { qb // 返信だけど投稿者自身への返信
-				.where(`note.replyId IS NOT NULL`)
-				.andWhere('note.replyUserId = note.userId', { meId: user.id });
-			}));
-		}))
 		.leftJoinAndSelect('note.user', 'user');
 
+	generateRepliesQuery(query, user);
 	generateVisibilityQuery(query, user);
 	if (user) generateMuteQuery(query, user);
 
diff --git a/src/server/api/endpoints/notes/timeline.ts b/src/server/api/endpoints/notes/timeline.ts
index 68a5784d9..2c25fbc96 100644
--- a/src/server/api/endpoints/notes/timeline.ts
+++ b/src/server/api/endpoints/notes/timeline.ts
@@ -7,6 +7,7 @@ import { generateVisibilityQuery } from '../../common/generate-visibility-query'
 import { generateMuteQuery } from '../../common/generate-mute-query';
 import { activeUsersChart } from '../../../../services/chart';
 import { Brackets } from 'typeorm';
+import { generateRepliesQuery } from '../../common/generate-replies-query';
 
 export const meta = {
 	desc: {
@@ -110,21 +111,10 @@ export default define(meta, async (ps, user) => {
 			.where(`note.userId IN (${ followingQuery.getQuery() })`)
 			.orWhere('note.userId = :meId', { meId: user.id });
 		}))
-		.andWhere(new Brackets(qb => { qb
-			.where(`note.replyId IS NULL`) // 返信ではない
-			.orWhere('note.replyUserId = :meId', { meId: user.id }) // 返信だけど自分のノートへの返信
-			.orWhere(new Brackets(qb => { qb // 返信だけど自分の行った返信
-				.where(`note.replyId IS NOT NULL`)
-				.andWhere('note.userId = :meId', { meId: user.id });
-			}))
-			.orWhere(new Brackets(qb => { qb // 返信だけど投稿者自身への返信
-				.where(`note.replyId IS NOT NULL`)
-				.andWhere('note.replyUserId = note.userId', { meId: user.id });
-			}));
-		}))
 		.leftJoinAndSelect('note.user', 'user')
 		.setParameters(followingQuery.getParameters());
 
+	generateRepliesQuery(query, user);
 	generateVisibilityQuery(query, user);
 	generateMuteQuery(query, user);