diff --git a/config/environments/production.rb b/config/environments/production.rb
index 4863b1d65..acd296ae2 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -12,7 +12,12 @@ Discourse::Application.configure do
   # Disable Rails's static asset server (Apache or nginx will already do this)
   config.serve_static_assets = GlobalSetting.serve_static_assets
 
-  config.assets.js_compressor = Uglifier.new(output: {max_line_len: 1024})
+  if defined?(Uglifier)
+    config.assets.js_compressor = Uglifier.new(output: {max_line_len: 1024})
+  else
+    config.assets.js_compressor = :uglifier
+  end
+
   config.assets.css_compressor = :sass
 
   # stuff should be pre-compiled