diff --git a/server/helpers/custom-validators/video-captions.ts b/server/helpers/custom-validators/video-captions.ts
index 9abbce04a..528edf60c 100644
--- a/server/helpers/custom-validators/video-captions.ts
+++ b/server/helpers/custom-validators/video-captions.ts
@@ -5,10 +5,10 @@ function isVideoCaptionLanguageValid (value: any) {
   return exists(value) && VIDEO_LANGUAGES[value] !== undefined
 }
 
-const videoCaptionTypes = Object.keys(MIMETYPES.VIDEO_CAPTIONS.MIMETYPE_EXT)
-                                .concat([ 'application/octet-stream' ]) // MacOS sends application/octet-stream ><
+const videoCaptionTypesRegex = Object.keys(MIMETYPES.VIDEO_CAPTIONS.MIMETYPE_EXT)
+                                .concat([ 'application/octet-stream' ]) // MacOS sends application/octet-stream
                                 .map(m => `(${m})`)
-const videoCaptionTypesRegex = videoCaptionTypes.join('|')
+                                .join('|')
 function isVideoCaptionFile (files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[], field: string) {
   return isFileValid(files, videoCaptionTypesRegex, field, CONSTRAINTS_FIELDS.VIDEO_CAPTIONS.CAPTION_FILE.FILE_SIZE.max)
 }
diff --git a/server/helpers/custom-validators/video-imports.ts b/server/helpers/custom-validators/video-imports.ts
index c571f5ddd..33a1fa8ab 100644
--- a/server/helpers/custom-validators/video-imports.ts
+++ b/server/helpers/custom-validators/video-imports.ts
@@ -23,8 +23,10 @@ function isVideoImportStateValid (value: any) {
   return exists(value) && VIDEO_IMPORT_STATES[value] !== undefined
 }
 
-const videoTorrentImportTypes = Object.keys(MIMETYPES.TORRENT.MIMETYPE_EXT).map(m => `(${m})`)
-const videoTorrentImportRegex = videoTorrentImportTypes.join('|')
+const videoTorrentImportRegex = Object.keys(MIMETYPES.TORRENT.MIMETYPE_EXT)
+                                      .concat([ 'application/octet-stream' ]) // MacOS sends application/octet-stream
+                                      .map(m => `(${m})`)
+                                      .join('|')
 function isVideoImportTorrentFile (files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[]) {
   return isFileValid(files, videoTorrentImportRegex, 'torrentfile', CONSTRAINTS_FIELDS.VIDEO_IMPORTS.TORRENT_FILE.FILE_SIZE.max, true)
 }