diff --git a/lib/aruba/platforms/windows_platform.rb b/lib/aruba/platforms/windows_platform.rb
index 17ece4d56..268154551 100644
--- a/lib/aruba/platforms/windows_platform.rb
+++ b/lib/aruba/platforms/windows_platform.rb
@@ -39,7 +39,7 @@ def which(program, path = ENV['PATH'])
       end
 
       def builtin_shell_commands
-        ['cd', 'echo', 'set', 'type']
+        ['cd', 'dir', 'echo', 'exit', 'set', 'type']
       end
     end
   end