diff --git a/app/controllers/static_controller.rb b/app/controllers/static_controller.rb
index 0d4a28c2..e0587fb0 100644
--- a/app/controllers/static_controller.rb
+++ b/app/controllers/static_controller.rb
@@ -9,7 +9,7 @@ class StaticController < ApplicationController
   def ccs
     ccs_method = !Settings.ccs ? 'local_tar_gz' : Settings.ccs.ccs_method
     if (ccs_method == 'local_tar_gz')
-      temp_file = "#{$RAILS_ROOT}/tmp/#{Time.current.to_i}.tar.gz"
+      temp_file = "#{Rails.root}/tmp/#{Time.current.to_i}.tar.gz"
       result = Kernel.system("git archive --format=tar.gz -o #{temp_file} HEAD")
       if result
         send_file(temp_file, :type => "application/gzip")
@@ -17,7 +17,7 @@ class StaticController < ApplicationController
         render :nothing => true, :status => 500
       end
     elsif (ccs_method == 'github')
-      git_hash = File.read("#{$RAILS_ROOT}/CCS_HASH")
+      git_hash = File.read("#{Rails.root}/CCS_HASH")
       redirect_to "https://github.com/#{Settings.ccs.options.account}/#{Settings.ccs.options.repo}/tree/#{git_hash}"
     end
 
diff --git a/spec/controllers/static_controller_spec.rb b/spec/controllers/static_controller_spec.rb
index f1ffb014..dc1a1a88 100644
--- a/spec/controllers/static_controller_spec.rb
+++ b/spec/controllers/static_controller_spec.rb
@@ -38,7 +38,7 @@ RSpec.describe StaticController, :type => :controller do
                   }
               }
           })
-      expect(File).to receive(:read).with("#{$RAILS_ROOT}/CCS_HASH").and_return("hash\n")
+      expect(File).to receive(:read).with("#{Rails.root}/CCS_HASH").and_return("hash\n")
       get('ccs')
       expect(response).to redirect_to "https://github.com/account/repo/tree/hash"
     end