diff --git a/src/backend/model/FFmpegFactory.ts b/src/backend/model/FFmpegFactory.ts
index f12f3821..ad3b4790 100644
--- a/src/backend/model/FFmpegFactory.ts
+++ b/src/backend/model/FFmpegFactory.ts
@@ -2,7 +2,7 @@ import {FfmpegCommand} from 'fluent-ffmpeg';
 
 /* eslint-disable @typescript-eslint/no-var-requires */
 export class FFmpegFactory {
-  public static get(): (path: string) => FfmpegCommand {
+  public static get(): (path?: string) => FfmpegCommand {
     const ffmpeg = require('fluent-ffmpeg');
     try {
       const ffmpegPath = require('ffmpeg-static');