diff --git a/lib/conf/cli.js b/lib/conf/cli.js
index <HASH>..<HASH> 100755
--- a/lib/conf/cli.js
+++ b/lib/conf/cli.js
@@ -191,8 +191,10 @@ var show_gui_and_exit = function () {
     else if (os_name == 'linux')
       gui_path = gui_path + '.py';
     else {
-      args = [gui_path.replace('prey-config', 'PreyConfig.app/Contents/MacOS/prey-config.rb')]
-      gui_path = '/usr/bin/ruby';
+      // args = [gui_path.replace('prey-config', 'PreyConfig.app/Contents/MacOS/prey-config.rb')]
+      // gui_path = '/usr/bin/ruby';
+      args = [gui_path.replace('prey-config', 'PreyConfig.app')];
+      gui_path = '/usr/bin/open';
     }
 
     helpers.run_detached(gui_path, args);
Use OSX's open command to fire up PreyConfig.