diff --git a/packages/tests/fixtures/peertube-plugin-test/main.js b/packages/tests/fixtures/peertube-plugin-test/main.js
index d8eaa3d71..c2570e6fc 100644
--- a/packages/tests/fixtures/peertube-plugin-test/main.js
+++ b/packages/tests/fixtures/peertube-plugin-test/main.js
@@ -1,5 +1,24 @@
 async function register ({ registerHook, registerSetting, settingsManager, storageManager, peertubeHelpers }) {
   {
+    registerSetting({
+      name: 'unique-setting',
+      label: 'Unique setting',
+      type: 'select',
+      options: []
+    })
+
+    registerSetting({
+      name: 'unique-setting',
+      label: 'Unique setting',
+      type: 'select',
+      options: [
+        {
+          value: 1,
+          label: 'One'
+        }
+      ]
+    })
+
     const actionHooks = [
       'action:application.listening',
       'action:notifier.notification.created',
diff --git a/packages/tests/src/plugins/index.ts b/packages/tests/src/plugins/index.ts
index 210af7236..fdcae82d5 100644
--- a/packages/tests/src/plugins/index.ts
+++ b/packages/tests/src/plugins/index.ts
@@ -5,6 +5,7 @@ import './html-injection'
 import './id-and-pass-auth'
 import './plugin-helpers'
 import './plugin-router'
+import './plugin-settings'
 import './plugin-storage'
 import './plugin-transcoding'
 import './plugin-unloading'
diff --git a/packages/tests/src/plugins/plugin-settings.ts b/packages/tests/src/plugins/plugin-settings.ts
new file mode 100644
index 000000000..cd41c425d
--- /dev/null
+++ b/packages/tests/src/plugins/plugin-settings.ts
@@ -0,0 +1,48 @@
+/* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
+
+import { expect } from 'chai'
+import {
+  cleanupTests,
+  createSingleServer,
+  PeerTubeServer,
+  PluginsCommand,
+  setAccessTokensToServers
+} from '@peertube/peertube-server-commands'
+
+describe('Test plugin settings', function () {
+  let server: PeerTubeServer
+  let command: PluginsCommand
+
+  before(async function () {
+    this.timeout(30000)
+
+    server = await createSingleServer(1)
+    await setAccessTokensToServers([ server ])
+
+    command = server.plugins
+
+    await command.install({
+      path: PluginsCommand.getPluginTestPath()
+    })
+  })
+
+  it('Should not have duplicate settings', async function () {
+    const { registeredSettings } = await command.getRegisteredSettings({
+      npmName: 'peertube-plugin-test'
+    })
+
+    expect(registeredSettings.length).to.equal(1)
+  })
+
+  it('Should return the latest registered settings', async function () {
+    const { registeredSettings } = await command.getRegisteredSettings({
+      npmName: 'peertube-plugin-test'
+    })
+
+    expect(registeredSettings[0].options.length).length.to.equal(1)
+  })
+
+  after(async function () {
+    await cleanupTests([ server ])
+  })
+})
diff --git a/server/core/lib/plugins/register-helpers.ts b/server/core/lib/plugins/register-helpers.ts
index 7c44bff88..dc46612a5 100644
--- a/server/core/lib/plugins/register-helpers.ts
+++ b/server/core/lib/plugins/register-helpers.ts
@@ -44,7 +44,7 @@ export class RegisterHelpers {
     }[]
   } = {}
 
-  private readonly settings: RegisterServerSettingOptions[] = []
+  private settings: RegisterServerSettingOptions[] = []
 
   private idAndPassAuths: RegisterServerAuthPassOptions[] = []
   private externalAuths: RegisterServerAuthExternalOptions[] = []
@@ -203,7 +203,10 @@ export class RegisterHelpers {
 
   private buildRegisterSetting () {
     return (options: RegisterServerSettingOptions) => {
-      this.settings.push(options)
+      this.settings = [
+        ...this.settings.filter((s) => s.name !== options.name),
+        options
+      ]
     }
   }