diff --git a/lib/coffee_script/command_line.js b/lib/coffee_script/command_line.js
index aa102f1c..a0f45979 100644
--- a/lib/coffee_script/command_line.js
+++ b/lib/coffee_script/command_line.js
@@ -70,7 +70,7 @@
     filename = path.basename(source, path.extname(source)) + '.js';
     dir = this.options.output || path.dirname(source);
     js_path = path.join(dir, filename);
-    return posix.open(js_path, process.O_CREAT | process.O_WRONLY | process.O_TRUNC, 0755).addCallback(function(fd) {
+    return posix.open(js_path, process.O_CREAT | process.O_WRONLY | process.O_TRUNC, parseInt('0755', 8)).addCallback(function(fd) {
       return posix.write(fd, js);
     });
   };
diff --git a/src/command_line.coffee b/src/command_line.coffee
index dd325331..69a6e4c2 100644
--- a/src/command_line.coffee
+++ b/src/command_line.coffee
@@ -78,7 +78,7 @@ exports.write_js: (source, js) ->
   filename: path.basename(source, path.extname(source)) + '.js'
   dir:      @options.output or path.dirname(source)
   js_path:  path.join dir, filename
-  posix.open(js_path, process.O_CREAT | process.O_WRONLY | process.O_TRUNC, 0755).addCallback (fd) ->
+  posix.open(js_path, process.O_CREAT | process.O_WRONLY | process.O_TRUNC, parseInt('0755', 8)).addCallback (fd) ->
     posix.write(fd, js)
 
 # Pipe compiled JS through JSLint (requires a working 'jsl' command).