diff --git a/.template/variants/web/package.json.rb b/.template/variants/web/package.json.rb
index 0b1a4a7c..34b2e414 100644
--- a/.template/variants/web/package.json.rb
+++ b/.template/variants/web/package.json.rb
@@ -52,7 +52,7 @@
 run %(npm set-script build "node app/javascript/build.js")
 run %(
   npm set-script build:css-production \
-  "sass #{source_stylesheet} #{bundled_stylesheet} #{(production_bundled_stylesheet_options).join(' ')}"
+  "sass #{source_stylesheet} #{bundled_stylesheet} #{production_bundled_stylesheet_options.join(' ')}"
 )
 run %(
   npm set-script build:css \