diff --git a/CHANGELOG.md b/CHANGELOG.md
index 10c9edfcc9..054389ef43 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@
 
 ### Server
 - Enhance: Remote Notes Cleaningが複雑度が高いノートの処理を中断せずに次のノートから再開するように
+- Fix: チャンネルの説明欄の最小文字数制約を除去
 
 ## 2025.10.2
 
diff --git a/packages/backend/src/server/api/endpoints/channels/create.ts b/packages/backend/src/server/api/endpoints/channels/create.ts
index e3a6d2d670..8d49b6fd0f 100644
--- a/packages/backend/src/server/api/endpoints/channels/create.ts
+++ b/packages/backend/src/server/api/endpoints/channels/create.ts
@@ -46,7 +46,7 @@ export const paramDef = {
 	type: 'object',
 	properties: {
 		name: { type: 'string', minLength: 1, maxLength: 128 },
-		description: { type: 'string', nullable: true, minLength: 1, maxLength: 2048 },
+		description: { type: 'string', nullable: true, maxLength: 2048 },
 		bannerId: { type: 'string', format: 'misskey:id', nullable: true },
 		color: { type: 'string', minLength: 1, maxLength: 16 },
 		isSensitive: { type: 'boolean', nullable: true },
diff --git a/packages/backend/src/server/api/endpoints/channels/update.ts b/packages/backend/src/server/api/endpoints/channels/update.ts
index dba2938b39..5ec55896e4 100644
--- a/packages/backend/src/server/api/endpoints/channels/update.ts
+++ b/packages/backend/src/server/api/endpoints/channels/update.ts
@@ -50,7 +50,7 @@ export const paramDef = {
 	properties: {
 		channelId: { type: 'string', format: 'misskey:id' },
 		name: { type: 'string', minLength: 1, maxLength: 128 },
-		description: { type: 'string', nullable: true, minLength: 1, maxLength: 2048 },
+		description: { type: 'string', nullable: true, maxLength: 2048 },
 		bannerId: { type: 'string', format: 'misskey:id', nullable: true },
 		isArchived: { type: 'boolean', nullable: true },
 		pinnedNoteIds: {