diff --git a/packages/backend/src/server/api/endpoints/antennas/create.ts b/packages/backend/src/server/api/endpoints/antennas/create.ts
index 766ad1ae3..7c94603eb 100644
--- a/packages/backend/src/server/api/endpoints/antennas/create.ts
+++ b/packages/backend/src/server/api/endpoints/antennas/create.ts
@@ -8,33 +8,6 @@ import { DI } from '@/di-symbols.js';
 import { RoleService } from '@/core/RoleService.js';
 import { ApiError } from '../../error.js';
 
-export const paramDef = {
-	type: 'object',
-	properties: {
-		name: { type: 'string', minLength: 1, maxLength: 100 },
-		src: { type: 'string', enum: ['home', 'all', 'users', 'list'] },
-		userListId: { type: 'string', format: 'misskey:id', nullable: true },
-		keywords: { type: 'array', items: {
-			type: 'array', items: {
-				type: 'string',
-			},
-		} },
-		excludeKeywords: { type: 'array', items: {
-			type: 'array', items: {
-				type: 'string',
-			},
-		} },
-		users: { type: 'array', items: {
-			type: 'string',
-		} },
-		caseSensitive: { type: 'boolean' },
-		withReplies: { type: 'boolean' },
-		withFile: { type: 'boolean' },
-		notify: { type: 'boolean' },
-	},
-	required: ['name', 'src', 'keywords', 'excludeKeywords', 'users', 'caseSensitive', 'withReplies', 'withFile', 'notify'],
-} as const;
-
 // eslint-disable-next-line import/no-default-export
 @Injectable()
 export default class extends Endpoint<'antenna/create'> {