diff --git a/lib/webpack/railtie.rb b/lib/webpack/railtie.rb
index 864a07a..585065c 100644
--- a/lib/webpack/railtie.rb
+++ b/lib/webpack/railtie.rb
@@ -32,7 +32,7 @@ class Railtie < ::Rails::Railtie
 
     config.webpack.dev_server.https = false # note - this will use OpenSSL::SSL::VERIFY_NONE
     config.webpack.dev_server.binary = 'node_modules/.bin/webpack-dev-server'
-    config.webpack.dev_server.enabled = !::Rails.env.production?
+    config.webpack.dev_server.enabled = ::Rails.env.development? || ::Rails.env.test?
 
     config.webpack.output_dir = "public/webpack"
     config.webpack.public_path = "webpack"
diff --git a/spec/manifest_spec.rb b/spec/manifest_spec.rb
index 03b615a..a4d76c4 100644
--- a/spec/manifest_spec.rb
+++ b/spec/manifest_spec.rb
@@ -85,7 +85,6 @@
         end
       end
     end
-
   end
 
   context "with dev server disabled" do