diff --git a/packages/backend/src/server/api/endpoints/admin/reset-password.ts b/packages/backend/src/server/api/endpoints/admin/reset-password.ts
index f19ffa173b..dc86768044 100644
--- a/packages/backend/src/server/api/endpoints/admin/reset-password.ts
+++ b/packages/backend/src/server/api/endpoints/admin/reset-password.ts
@@ -9,7 +9,9 @@ import { Endpoint } from '@/server/api/endpoint-base.js';
 import { ApiError } from '@/server/api/error.js';
 import type { UsersRepository, UserProfilesRepository, MiMeta } from '@/models/_.js';
 import { DI } from '@/di-symbols.js';
+import { ApiError } from '@/server/api/error.js';
 import { secureRndstr } from '@/misc/secure-rndstr.js';
+import { RoleService } from '@/core/RoleService.js';
 import { ModerationLogService } from '@/core/ModerationLogService.js';
 
 export const meta = {
@@ -25,10 +27,10 @@ export const meta = {
 			code: 'NO_SUCH_USER',
 			id: 'ccafc7fe-5074-4edd-9dc0-8ef9ef6a701d',
 		},
-		cannotResetPasswordOfRootUser: {
-			message: 'Cannot reset password of the root user.',
-			code: 'CANNOT_RESET_PASSWORD_OF_ROOT_USER',
-			id: 'f28fc207-42ca-44c7-a577-44b4f0ec5999',
+		accessDenied: {
+			message: 'Access denied.',
+			code: 'ACCESS_DENIED',
+			id: 'cda8f8ce-89a6-4f92-8055-33bbe0c1464d',
 		},
 	},
 
@@ -66,6 +68,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		@Inject(DI.userProfilesRepository)
 		private userProfilesRepository: UserProfilesRepository,
 
+		private roleService: RoleService,
 		private moderationLogService: ModerationLogService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
@@ -75,8 +78,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				throw new ApiError(meta.errors.noSuchUser);
 			}
 
-			if (this.serverSettings.rootUserId === user.id) {
-				throw new ApiError(meta.errors.cannotResetPasswordOfRootUser);
+			if (await this.roleService.isAdministrator(user) && me.id !== user.id) {
+				throw new ApiError(meta.errors.accessDenied);
 			}
 
 			const passwd = secureRndstr(8);
diff --git a/packages/backend/src/server/api/endpoints/admin/unset-mfa.ts b/packages/backend/src/server/api/endpoints/admin/unset-mfa.ts
index 3d964825d3..75b3e3e2bf 100644
--- a/packages/backend/src/server/api/endpoints/admin/unset-mfa.ts
+++ b/packages/backend/src/server/api/endpoints/admin/unset-mfa.ts
@@ -11,6 +11,7 @@ import { MiUserProfile } from '@/models/UserProfile.js';
 import { MiUserSecurityKey } from '@/models/UserSecurityKey.js';
 import type { UsersRepository } from '@/models/_.js';
 import { DI } from '@/di-symbols.js';
+import { RoleService } from '@/core/RoleService.js';
 import { ModerationLogService } from '@/core/ModerationLogService.js';
 
 export const meta = {
@@ -26,6 +27,11 @@ export const meta = {
 			code: 'NO_SUCH_USER',
 			id: 'ccafc7fe-5074-4edd-9dc0-8ef9ef6a701d',
 		},
+		accessDenied: {
+			message: 'Access denied.',
+			code: 'ACCESS_DENIED',
+			id: 'cda8f8ce-89a6-4f92-8055-33bbe0c1464d',
+		},
 	},
 } as const;
 
@@ -46,6 +52,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		@Inject(DI.usersRepository)
 		private usersRepository: UsersRepository,
 
+		private roleService: RoleService,
 		private moderationLogService: ModerationLogService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
@@ -55,6 +62,10 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				throw new ApiError(meta.errors.noSuchUser);
 			}
 
+			if (await this.roleService.isAdministrator(user) && me.id !== user.id) {
+				throw new ApiError(meta.errors.accessDenied);
+			}
+
 			await this.db.transaction(async (transactionalEntityManager) => {
 				// パスキーを全て削除
 				await transactionalEntityManager.delete(MiUserSecurityKey, { userId: user.id });