diff --git a/lib/submitters.rb b/lib/submitters.rb
index c557dd3e..47fbf014 100644
--- a/lib/submitters.rb
+++ b/lib/submitters.rb
@@ -14,6 +14,7 @@ module Submitters
   UnableToSendCode = Class.new(StandardError)
   InvalidOtp = Class.new(StandardError)
   MaliciousFileExtension = Class.new(StandardError)
+  ArgumentError = Class.new(StandardError)
 
   DANGEROUS_EXTENSIONS = Set.new(%w[
     exe com bat cmd scr pif vbs vbe js jse wsf wsh msi msp
@@ -133,7 +134,7 @@ module Submitters
                                                filename: file.original_filename,
                                                content_type: file.content_type)
       else
-        ActiveStorage::Blob.find_signed(params[:blob_signed_id])
+        raise ArgumentError, 'file param is missing'
       end
 
     ActiveStorage::Attachment.create!(