1 files changed, 2 insertions, 2 deletions
diff --git a/tools/js-optimizer.js b/tools/js-optimizer.js
index 213e2257..7094cdfc 100644
--- a/tools/js-optimizer.js
+++ b/tools/js-optimizer.js
@@ -46,9 +46,9 @@ if (ENVIRONMENT_IS_NODE) {
     this['read'] = function(f) { snarf(f) };
   }
 
-  if (!this['arguments']) {
+  if (typeof scriptArgs != 'undefined') {
     arguments_ = scriptArgs;
-  } else {
+  } else if (typeof arguments != 'undefined') {
     arguments_ = arguments;
   }