diff --git a/init.d/basics/ui.el b/init.d/basics/ui.el
index df5b599..c3e4390 100644
--- a/init.d/basics/ui.el
+++ b/init.d/basics/ui.el
@@ -1,6 +1,6 @@
 ;;; ui.el --- Configure user interfaces. -*- lexical-binding: t; -*-
 
-;; Time-stamp: <2020-11-14T22:07:12+0100>
+;; Time-stamp: <2020-11-14T22:10:17+0100>
 
 ;;; Commentary:
 ;; * treemacs
@@ -30,14 +30,20 @@
                                   :extend t))
             (defun my/treemacs-set-hl-line ()
               (set (make-local-variable 'hl-line-face)
-                   'hl-line-treemacs-face)))
+                   'hl-line-treemacs-face))
+            (defun my/treemacs-show-maybe ()
+              (when (and (>= (frame-width) 120)
+                         (file-exists-p treemacs-persist-file))
+                (treemacs)
+                (other-window 1))))
   :bind (("<f9>" . treemacs-select-window) ; Focus treemacs.
          ("C-<f9>" . treemacs)             ; Toggle treemacs.
          ("M-<f9>" . treemacs-add-and-display-current-project)
          (:map treemacs-mode-map
                ("<mouse-1>" . treemacs-single-click-expand-action)))
 :hook ((treemacs-mode . my/disable-line-numbers)
-       (treemacs-mode . my/treemacs-set-hl-line)))
+       (treemacs-mode . my/treemacs-set-hl-line)
+       (after-init . my/treemacs-show-maybe)))
 
 (use-package treemacs-projectile
   :demand t