diff --git a/lib/tasks/assets.rake b/lib/tasks/assets.rake
index bc11b20d22f..8c299d0cf6d 100644
--- a/lib/tasks/assets.rake
+++ b/lib/tasks/assets.rake
@@ -11,7 +11,7 @@ task 'assets:precompile:before' do
   puts "Purging temp files"
   `rm -fr #{Rails.root}/tmp/cache`
 
-  if Rails.configuration.assets.js_compressor == :uglifier && !`which uglifyjs`.empty? && ENV['FORCE_NODE_UGLIFY']
+  if Rails.configuration.assets.js_compressor == :uglifier && !`which uglifyjs`.empty? && !ENV['SKIP_NODE_UGLIFY']
     $node_uglify = true
   end