diff --git a/bundle/bundle--gui.el b/bundle/bundle--gui.el
index 15dbf978..1a34e524 100644
--- a/bundle/bundle--gui.el
+++ b/bundle/bundle--gui.el
@@ -48,7 +48,7 @@
         (vertical-scroll-bars)
         ,@(cond ((eq system-type 'gnu/linux)
                  '((fullscreen . maximized)
-                   (undecorated . nil))))))
+                   (undecorated . t))))))
 
 (setq frame-resize-pixelwise t)