diff --git a/server/controllers/tracker.ts b/server/controllers/tracker.ts
index 53eab73ac..9a8aa88bc 100644
--- a/server/controllers/tracker.ts
+++ b/server/controllers/tracker.ts
@@ -114,8 +114,7 @@ function createWebsocketTrackerServer (app: express.Application) {
         return
       }
 
-      // FIXME: typings
-      return wss.handleUpgrade(request, socket as any, head, ws => wss.emit('connection', ws, request))
+      return wss.handleUpgrade(request, socket, head, ws => wss.emit('connection', ws, request))
     }
 
     // Don't destroy socket, we have Socket.IO too
diff --git a/server/middlewares/validators/videos/video-view.ts b/server/middlewares/validators/videos/video-view.ts
index 6e2d4505d..a2f61f4ba 100644
--- a/server/middlewares/validators/videos/video-view.ts
+++ b/server/middlewares/validators/videos/video-view.ts
@@ -4,7 +4,7 @@ import { isVideoTimeValid } from '@server/helpers/custom-validators/video-view'
 import { getCachedVideoDuration } from '@server/lib/video'
 import { LocalVideoViewerModel } from '@server/models/view/local-video-viewer'
 import { HttpStatusCode } from '../../../../shared/models/http/http-error-codes'
-import { exists, isIdValid, isIntOrNull, toIntOrNull } from '../../../helpers/custom-validators/misc'
+import { isIdValid, isIntOrNull, toIntOrNull } from '../../../helpers/custom-validators/misc'
 import { areValidationErrors, doesVideoExist, isValidVideoIdParam } from '../shared'
 
 const getVideoLocalViewerValidator = [
@@ -32,7 +32,6 @@ const videoViewValidator = [
   isValidVideoIdParam('videoId'),
 
   body('currentTime')
-    .optional() // TODO: remove optional in a few versions, introduced in 4.2
     .customSanitizer(toIntOrNull)
     .custom(isIntOrNull),
 
@@ -43,13 +42,7 @@ const videoViewValidator = [
     const video = res.locals.onlyImmutableVideo
     const { duration } = await getCachedVideoDuration(video.id)
 
-    if (!exists(req.body.currentTime)) { // TODO: remove in a few versions, introduced in 4.2
-      req.body.currentTime = Math.min(duration ?? 0, 30)
-    }
-
-    const currentTime: number = req.body.currentTime
-
-    if (!isVideoTimeValid(currentTime, duration)) {
+    if (!isVideoTimeValid(req.body.currentTime, duration)) {
       return res.fail({
         status: HttpStatusCode.BAD_REQUEST_400,
         message: 'Current time is invalid'
diff --git a/server/tests/api/check-params/views.ts b/server/tests/api/check-params/views.ts
index 84d31c509..11416ccb8 100644
--- a/server/tests/api/check-params/views.ts
+++ b/server/tests/api/check-params/views.ts
@@ -43,8 +43,9 @@ describe('Test videos views', function () {
 
   describe('When viewing a video', async function () {
 
-    // TODO: implement it when we'll remove backward compatibility in REST API
-    it('Should fail without current time')
+    it('Should fail without current time', async function () {
+      await servers[0].views.view({ id: videoId, currentTime: undefined, expectedStatus: HttpStatusCode.BAD_REQUEST_400 })
+    })
 
     it('Should fail with an invalid current time', async function () {
       await servers[0].views.view({ id: videoId, currentTime: -1, expectedStatus: HttpStatusCode.BAD_REQUEST_400 })
diff --git a/server/tests/api/videos/videos-common-filters.ts b/server/tests/api/videos/videos-common-filters.ts
index f68560b06..fac0f5dc5 100644
--- a/server/tests/api/videos/videos-common-filters.ts
+++ b/server/tests/api/videos/videos-common-filters.ts
@@ -546,7 +546,7 @@ describe('Test videos filter', function () {
 
         expect(foundVideo).to.not.be.undefined
       }
-      await servers[0].views.view({ id, token: servers[0].accessToken })
+      await servers[0].views.view({ id, currentTime: 1, token: servers[0].accessToken })
 
       for (const path of paths) {
         const videos = await listVideos({ server: servers[0], path, excludeAlreadyWatched: true })
diff --git a/shared/server-commands/videos/views-command.ts b/shared/server-commands/videos/views-command.ts
index 01113f798..bdb8daaa4 100644
--- a/shared/server-commands/videos/views-command.ts
+++ b/shared/server-commands/videos/views-command.ts
@@ -6,7 +6,7 @@ export class ViewsCommand extends AbstractCommand {
 
   view (options: OverrideCommandOptions & {
     id: number | string
-    currentTime?: number
+    currentTime: number
     viewEvent?: VideoViewEvent
     xForwardedFor?: string
   }) {
@@ -19,7 +19,7 @@ export class ViewsCommand extends AbstractCommand {
       path,
       xForwardedFor,
       fields: {
-        currentTime: currentTime ?? 1,
+        currentTime,
         viewEvent
       },
       implicitToken: false,