diff --git a/app/helpers/documentables_helper.rb b/app/helpers/documentables_helper.rb
index be827159d..74d7ccf0d 100644
--- a/app/helpers/documentables_helper.rb
+++ b/app/helpers/documentables_helper.rb
@@ -8,7 +8,7 @@ module DocumentablesHelper
   end
 
   def max_file_size(documentable_class)
-    bytes_to_mega(documentable_class.max_file_size)
+    documentable_class.max_file_size / Numeric::MEGABYTE
   end
 
   def accepted_content_types(documentable_class)
diff --git a/app/helpers/documents_helper.rb b/app/helpers/documents_helper.rb
index 1200b418a..0a57b7299 100644
--- a/app/helpers/documents_helper.rb
+++ b/app/helpers/documents_helper.rb
@@ -7,10 +7,6 @@ module DocumentsHelper
     document.errors[:attachment].join(", ") if document.errors.key?(:attachment)
   end
 
-  def bytes_to_mega(bytes)
-    bytes / Numeric::MEGABYTE
-  end
-
   def render_destroy_document_link(builder, document)
     if !document.persisted? && document.cached_attachment.present?
       link_to t("documents.form.delete_button"),
diff --git a/spec/shared/models/document_validations.rb b/spec/shared/models/document_validations.rb
index 9ef685d6f..1a9a59a56 100644
--- a/spec/shared/models/document_validations.rb
+++ b/spec/shared/models/document_validations.rb
@@ -1,5 +1,4 @@
 shared_examples "document validations" do |documentable_factory|
-  include DocumentsHelper
   include DocumentablesHelper
 
   let!(:document)               { build(:document, documentable_factory.to_sym) }