diff --git a/global.org b/global.org
index 2dcd456..c9c2621 100644
--- a/global.org
+++ b/global.org
@@ -182,9 +182,10 @@
      (add-to-list 'display-buffer-alist
       '("\\*mu4e-headers\\*"
         (display-buffer-in-side-window)
+        (dedicated . t)
         (side . top )
         (slot . 0)
-        (window-height . 20)))
+        (window-height . 40)))
    #+end_src
    Then, treat the ~calendar~
    #+begin_src emacs-lisp