diff --git a/Keroosha.SilencerBot/Env.fs b/Keroosha.SilencerBot/Env.fs
index ba3a214..2589c46 100644
--- a/Keroosha.SilencerBot/Env.fs
+++ b/Keroosha.SilencerBot/Env.fs
@@ -42,10 +42,10 @@ let runProc filename args startDir =
                 RedirectStandardOutput = true,
                 RedirectStandardError = true,
                 UseShellExecute = false,
-                FileName = filename,
-                Arguments = ArgumentEscaper.EscapeAndConcatenate args
+                FileName = filename
             )
             
+        List.iter procStartInfo.ArgumentList.Add <| args
         match startDir with | Some d -> procStartInfo.WorkingDirectory <- d | _ -> ()
 
         let outputs = System.Collections.Generic.List<string>()
diff --git a/Keroosha.SilencerBot/Keroosha.SilencerBot.fsproj b/Keroosha.SilencerBot/Keroosha.SilencerBot.fsproj
index 73b9c28..4d96368 100644
--- a/Keroosha.SilencerBot/Keroosha.SilencerBot.fsproj
+++ b/Keroosha.SilencerBot/Keroosha.SilencerBot.fsproj
@@ -27,5 +27,9 @@
         <PackageReference Include="System.Text.Json" Version="7.0.2" />
         <PackageReference Include="McMaster.Extensions.CommandLineUtils" Version="4.0.2" />
     </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\Keroosha.SilencerBot.Misc\Keroosha.SilencerBot.Misc.csproj" />
+    </ItemGroup>
     
 </Project>
diff --git a/Keroosha.SilencerBot/Processing.fs b/Keroosha.SilencerBot/Processing.fs
index b4aeac3..9e4c41a 100644
--- a/Keroosha.SilencerBot/Processing.fs
+++ b/Keroosha.SilencerBot/Processing.fs
@@ -1,7 +1,6 @@
 module Keroosha.SilencerBot.Processing
 
 open System
-open System.Collections.Generic
 open System.IO
 open System.Net.Http
 open System.Text.Json
@@ -16,12 +15,18 @@ open Microsoft.FSharp.Control
 module TgClient = Funogram.Tools.Api
 
 let http = new HttpClient()
-
 let inline private (>>=) a b = (a, b) |> async.Bind
 let getContext (x: UserJob) = x.Context |> JsonSerializer.Deserialize<JsonJobContext>
 let serializeContext (x: JsonJobContext) = x |> JsonSerializer.Serialize<JsonJobContext>
 let downloadUrl token path = $"https://api.telegram.org/file/bot{token}/{path}"
 
+let getArtifactsPath (ctx: JsonJobContext) =
+  let cleanName = Path.GetFileNameWithoutExtension ctx.savePath
+  
+  Path.Combine(Path.GetDirectoryName ctx.savePath, $"{cleanName}_Instruments.wav"),
+  Path.Combine(Path.GetDirectoryName ctx.savePath, $"{cleanName}_Vocals.wav")
+
+
 let failJob (x: UserJob, ctx: JsonJobContext) (errMessage: String) =
   { x with
      State = JobState.Failed
@@ -103,18 +108,19 @@ let processExecuting (job: UserJob, botConfig: Funogram.Types.BotConfig, config:
                ]
     let! stdout, stderr = runProc $"/usr/bin/python" args (Some config.processorWorkingPath)
     let ctxWithOutput = { ctx with stdout = stdout; stderr = stderr }
-    return { job with
-               State = JobState.UploadingResults
-               Context = serializeContext ctxWithOutput
-            }
+    
+    let instrumentalPath, vocalsPath = getArtifactsPath ctx
+    return match File.Exists instrumentalPath && File.Exists vocalsPath with
+           | true -> { job with State = JobState.UploadingResults; Context = serializeContext ctxWithOutput }
+           | false ->
+             File.Delete ctx.savePath
+             failJob (job, ctxWithOutput) "Missing artifacts"
   }
 
 let processUploading (job: UserJob, botConfig: Funogram.Types.BotConfig, config: BotConfig) =
   async {
     let ctx = getContext job
-    let cleanName = Path.GetFileNameWithoutExtension ctx.savePath
-    let instrumentalPath = Path.Combine(Path.GetDirectoryName ctx.savePath, $"{cleanName}_Instruments.wav")
-    let vocalsPath = Path.Combine(Path.GetDirectoryName ctx.savePath, $"{cleanName}_Vocals.wav")
+    let instrumentalPath, vocalsPath = getArtifactsPath ctx
     use fInstrumental = File.OpenRead instrumentalPath
     use fVocals = File.OpenRead vocalsPath
     
diff --git a/Keroosha.SilencerBot/Telegram.fs b/Keroosha.SilencerBot/Telegram.fs
index 392fdbc..76a6507 100644
--- a/Keroosha.SilencerBot/Telegram.fs
+++ b/Keroosha.SilencerBot/Telegram.fs
@@ -16,6 +16,7 @@ type VoiceRemoveArgs = {
   fileId: string
   filename: string
   chatId: int64
+  fileSize: uint64
 }
 
 type StartArgs = {
@@ -34,6 +35,7 @@ let runDate = DateTime.UtcNow
 let greetingText = "Привет, отправь мне вавку и я попробую убрать из нее голос"
 let jobCreatedText = "Запустил задачу, обрабатываю"
 let unknownUserText = "Прости, но мы с тобой не знакомы, отправь мне в ЛС /start"
+let fileTooLargeText = "Файл слишком большой, я умею работать с файлами до 40мб"
 
 let isVoiceRemoveAction(update: Update) =
   update.Message.IsSome &&
@@ -54,7 +56,8 @@ let resolveUpdate (ctx: UpdateContext) =
     VoiceRemove {
       fileId = x.Message.Value.Audio.Value.FileId
       chatId = x.Message.Value.From.Value.Id
-      filename = x.Message.Value.Audio.Value.FileName.Value 
+      filename = x.Message.Value.Audio.Value.FileName.Value
+      fileSize = x.Message.Value.Audio.Value.FileSize.Value |> uint64
     }
   | x when isStartCommand x ->
     Start {
@@ -78,22 +81,26 @@ let createBotInbox (cfg: BotConfig, botCfg: Funogram.Types.BotConfig, dbFactory:
               do! TgClient.makeRequestAsync botCfg <| Api.sendMessage x.chatId unknownUserText |> Async.Ignore
               ()
             | _ ->
-              let jobContext: JsonJobContext = {
-                stderr = ""
-                stdout = ""
-                chatId = x.chatId 
-                fileId = x.fileId
-                savePath = Path.Combine(cfg.tempSavePath, x.filename) 
-              }
-              let job: UserJob = { Id = Guid.NewGuid()
-                                   State = JobState.New
-                                   UserId = user.Id
-                                   Context = JsonSerializer.Serialize(jobContext)
-                                   WorkerId = Nullable()
-                                   }
-              do! db.InsertAsync(job) |> Async.AwaitTask |> Async.Ignore
-              do! trx.CommitAsync() |> Async.AwaitTask
-              do! TgClient.makeRequestAsync botCfg <| Api.sendMessage x.chatId jobCreatedText |> Async.Ignore
+              match Math.Floor(double(x.fileSize) / double(Math.Pow(1024, 2))) < double(40) with
+              | true -> 
+                let jobContext: JsonJobContext = {
+                  stderr = ""
+                  stdout = ""
+                  chatId = x.chatId 
+                  fileId = x.fileId
+                  savePath = Path.Combine(cfg.tempSavePath, x.filename) 
+                }
+                let job: UserJob = { Id = Guid.NewGuid()
+                                     State = JobState.New
+                                     UserId = user.Id
+                                     Context = JsonSerializer.Serialize(jobContext)
+                                     WorkerId = Nullable()
+                                     }
+                do! db.InsertAsync(job) |> Async.AwaitTask |> Async.Ignore
+                do! trx.CommitAsync() |> Async.AwaitTask
+                do! TgClient.makeRequestAsync botCfg <| Api.sendMessage x.chatId jobCreatedText |> Async.Ignore
+              | false ->
+                do! TgClient.makeRequestAsync botCfg <| Api.sendMessage x.chatId fileTooLargeText |> Async.Ignore
               ()
           | Start x ->
             let db = dbFactory()