diff --git a/CHANGELOG.md b/CHANGELOG.md
index a01c66dd..5304f0f8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,10 @@ master
 ------
 
 * Fix bug with generated `bin/heroku_install` script iterating through multiple
-  Ember application's directories.
+* Don't mount route helpers at top-level. Instead, mount within the surrounding
+  context with which they're invoked. [#381]
+
+[#381]: https://github.com/thoughtbot/ember-cli-rails/pull/381
 
 0.7.0
 -----
diff --git a/lib/ember_cli/route_helpers.rb b/lib/ember_cli/route_helpers.rb
index f20f8639..f21f7421 100644
--- a/lib/ember_cli/route_helpers.rb
+++ b/lib/ember_cli/route_helpers.rb
@@ -14,15 +14,13 @@ def mount_ember_app(app_name, to:, **options)
           format: :html,
         )
 
-        Rails.application.routes.draw do
-          scope constraints: EmberCli::HtmlConstraint.new do
-            get("#{to}(*rest)", routing_options)
-          end
+        scope constraints: ::EmberCli::HtmlConstraint.new do
+          get("#{to}(*rest)", routing_options)
+        end
 
-          dist_directory = EmberCli[app_name].paths.dist
+        dist_directory = ::EmberCli[app_name].paths.dist
 
-          mount Rack::File.new(dist_directory.to_s) => to
-        end
+        mount Rack::File.new(dist_directory.to_s) => to
       end
     end
   end