diff --git a/packages/backend/src/core/ChannelMutingService.ts b/packages/backend/src/core/ChannelMutingService.ts
index 041ac19305..6347972392 100644
--- a/packages/backend/src/core/ChannelMutingService.ts
+++ b/packages/backend/src/core/ChannelMutingService.ts
@@ -15,7 +15,7 @@ import { RedisKVCache } from '@/misc/cache.js';
 
 @Injectable()
 export class ChannelMutingService {
-	public userMutingChannelsCache: RedisKVCache<Set<string>>;
+	public mutingChannelsCache: RedisKVCache<Set<string>>;
 
 	constructor(
 		@Inject(DI.redis)
@@ -29,7 +29,7 @@ export class ChannelMutingService {
 		private idService: IdService,
 		private globalEventService: GlobalEventService,
 	) {
-		this.userMutingChannelsCache = new RedisKVCache<Set<string>>(this.redisClient, 'channelMutingChannels', {
+		this.mutingChannelsCache = new RedisKVCache<Set<string>>(this.redisClient, 'channelMutingChannels', {
 			lifetime: 1000 * 60 * 30, // 30m
 			memoryCacheLifetime: 1000 * 60, // 1m
 			fetcher: (userId) => this.channelMutingRepository.find({
@@ -115,7 +115,7 @@ export class ChannelMutingService {
 		requestUserId: MiUser['id'],
 		targetChannelId: MiChannel['id'],
 	}): Promise<boolean> {
-		const mutedChannels = await this.userMutingChannelsCache.get(params.requestUserId);
+		const mutedChannels = await this.mutingChannelsCache.get(params.requestUserId);
 		return (mutedChannels?.has(params.targetChannelId) ?? false);
 	}
 
@@ -173,7 +173,7 @@ export class ChannelMutingService {
 
 		const userIds = [...new Set(expiredMutings.map(x => x.userId))];
 		for (const userId of userIds) {
-			this.userMutingChannelsCache.refresh(userId).then();
+			this.mutingChannelsCache.refresh(userId).then();
 		}
 	}
 
@@ -185,11 +185,11 @@ export class ChannelMutingService {
 			const { type, body } = obj.message as GlobalEvents['internal']['payload'];
 			switch (type) {
 				case 'muteChannel': {
-					this.userMutingChannelsCache.refresh(body.userId).then();
+					this.mutingChannelsCache.refresh(body.userId).then();
 					break;
 				}
 				case 'unmuteChannel': {
-					this.userMutingChannelsCache.delete(body.userId).then();
+					this.mutingChannelsCache.delete(body.userId).then();
 					break;
 				}
 			}
@@ -198,7 +198,7 @@ export class ChannelMutingService {
 
 	@bindThis
 	public dispose(): void {
-		this.userMutingChannelsCache.dispose();
+		this.mutingChannelsCache.dispose();
 	}
 
 	@bindThis
diff --git a/packages/backend/src/core/FanoutTimelineEndpointService.ts b/packages/backend/src/core/FanoutTimelineEndpointService.ts
index b7534d6cb4..fcf6b5f84b 100644
--- a/packages/backend/src/core/FanoutTimelineEndpointService.ts
+++ b/packages/backend/src/core/FanoutTimelineEndpointService.ts
@@ -111,7 +111,7 @@ export class FanoutTimelineEndpointService {
 					this.cacheService.renoteMutingsCache.fetch(ps.me.id),
 					this.cacheService.userBlockedCache.fetch(ps.me.id),
 					this.cacheService.userProfileCache.fetch(me.id).then(p => new Set(p.mutedInstances)),
-					ps.excludeMutedChannels ? this.channelMutingService.userMutingChannelsCache.fetch(me.id) : Promise.resolve(new Set<string>()),
+					ps.excludeMutedChannels ? this.channelMutingService.mutingChannelsCache.fetch(me.id) : Promise.resolve(new Set<string>()),
 				]);
 
 				const parentFilter = filter;
diff --git a/packages/backend/src/server/api/stream/Connection.ts b/packages/backend/src/server/api/stream/Connection.ts
index e667f86604..63d13c04d9 100644
--- a/packages/backend/src/server/api/stream/Connection.ts
+++ b/packages/backend/src/server/api/stream/Connection.ts
@@ -39,7 +39,6 @@ export default class Connection {
 	public userIdsWhoBlockingMe: Set<string> = new Set();
 	public userIdsWhoMeMutingRenotes: Set<string> = new Set();
 	public userMutedInstances: Set<string> = new Set();
-	public userMutedChannels: Set<string> = new Set();
 	private fetchIntervalId: NodeJS.Timeout | null = null;
 
 	constructor(
@@ -71,7 +70,7 @@ export default class Connection {
 			this.cacheService.userProfileCache.fetch(this.user.id),
 			this.cacheService.userFollowingsCache.fetch(this.user.id),
 			this.channelFollowingService.userFollowingChannelsCache.fetch(this.user.id),
-			this.channelMutingService.userMutingChannelsCache.fetch(this.user.id),
+			this.channelMutingService.mutingChannelsCache.fetch(this.user.id),
 			this.cacheService.userMutingsCache.fetch(this.user.id),
 			this.cacheService.userBlockedCache.fetch(this.user.id),
 			this.cacheService.renoteMutingsCache.fetch(this.user.id),
@@ -125,37 +124,16 @@ export default class Connection {
 		const { type, body } = obj;
 
 		switch (type) {
-			case 'readNotification':
-				this.onReadNotification(body);
-				break;
-			case 'subNote':
-				this.onSubscribeNote(body);
-				break;
-			case 's':
-				this.onSubscribeNote(body);
-				break; // alias
-			case 'sr':
-				this.onSubscribeNote(body);
-				this.readNote(body);
-				break;
-			case 'unsubNote':
-				this.onUnsubscribeNote(body);
-				break;
-			case 'un':
-				this.onUnsubscribeNote(body);
-				break; // alias
-			case 'connect':
-				this.onChannelConnectRequested(body);
-				break;
-			case 'disconnect':
-				this.onChannelDisconnectRequested(body);
-				break;
-			case 'channel':
-				this.onChannelMessageRequested(body);
-				break;
-			case 'ch':
-				this.onChannelMessageRequested(body);
-				break; // alias
+			case 'readNotification': this.onReadNotification(body); break;
+			case 'subNote': this.onSubscribeNote(body); break;
+			case 's': this.onSubscribeNote(body); break; // alias
+			case 'sr': this.onSubscribeNote(body); this.readNote(body); break;
+			case 'unsubNote': this.onUnsubscribeNote(body); break;
+			case 'un': this.onUnsubscribeNote(body); break; // alias
+			case 'connect': this.onChannelConnectRequested(body); break;
+			case 'disconnect': this.onChannelDisconnectRequested(body); break;
+			case 'channel': this.onChannelMessageRequested(body); break;
+			case 'ch': this.onChannelMessageRequested(body); break; // alias
 		}
 	}
 
diff --git a/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts b/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
index 7cd7bcf56d..3b6e678e0a 100644
--- a/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
@@ -63,7 +63,7 @@ class HybridTimelineChannel extends Channel {
 			(note.channelId == null && Object.hasOwn(this.following, note.userId)) ||
 			(note.channelId == null && (note.user.host == null && note.visibility === 'public')) ||
 			(note.channelId != null && this.followingChannels.has(note.channelId)) ||
-			(note.channelId != null && !isChannelRelated(note, this.mutingChannels))
+			(note.channelId != null && isChannelRelated(note, this.mutingChannels))
 		)) return;
 
 		if (note.visibility === 'followers') {