diff --git a/spec/legacy/support/legacy_assertions.rb b/spec/legacy/support/legacy_assertions.rb
index 08494c2092..cc79e3edcb 100644
--- a/spec/legacy/support/legacy_assertions.rb
+++ b/spec/legacy/support/legacy_assertions.rb
@@ -80,8 +80,6 @@ module LegacyAssertionsAndHelpers
     file
   end
 
-  include OpenProject::Files
-
   def save_and_open_page
     body = response.body
 
diff --git a/spec/legacy_spec_helper.rb b/spec/legacy_spec_helper.rb
index b86969b365..028bfa4b61 100644
--- a/spec/legacy_spec_helper.rb
+++ b/spec/legacy_spec_helper.rb
@@ -37,6 +37,7 @@ require 'fileutils'
 require 'rspec/mocks'
 require 'factory_girl_rails'
 
+require_relative './support/file_helpers'
 require_relative './legacy/support/legacy_assertions'
 
 require_relative './legacy/support/object_daddy_helpers'