diff --git a/lib/uh/wm/client.rb b/lib/uh/wm/client.rb
index 546288d..44c604d 100644
--- a/lib/uh/wm/client.rb
+++ b/lib/uh/wm/client.rb
@@ -1,7 +1,8 @@
 module Uh
   module WM
     class Client
-      attr_reader :window
+      attr_reader   :window
+      attr_accessor :geo
 
       def initialize window, geo = nil
         @window = window