diff --git a/core/lib/spree/testing_support/dummy_app.rb b/core/lib/spree/testing_support/dummy_app.rb
index f78ebf645e9..f51b49b0b60 100644
--- a/core/lib/spree/testing_support/dummy_app.rb
+++ b/core/lib/spree/testing_support/dummy_app.rb
@@ -123,6 +123,7 @@ class Application < ::Rails::Application
     ActiveRecord::Migrator.migrations_paths = migration_dirs
     ActiveRecord::Migration.verbose = false
 
+    config.assets.config_manifest = File.expand_path('dummy_app/assets/config/manifest.js', __dir__)
     config.assets.paths << File.expand_path('dummy_app/assets/javascripts', __dir__)
     config.assets.paths << File.expand_path('dummy_app/assets/stylesheets', __dir__)
     config.assets.css_compressor = nil
diff --git a/core/lib/spree/testing_support/dummy_app/assets/config/manifest.js b/core/lib/spree/testing_support/dummy_app/assets/config/manifest.js
new file mode 100644
index 00000000000..f1a638ef159
--- /dev/null
+++ b/core/lib/spree/testing_support/dummy_app/assets/config/manifest.js
@@ -0,0 +1,3 @@
+// This manifest is left empty because we are already
+// injecting Solidus manifests to be compiled in the
+// precompile array manually.