diff --git a/init.d/basics/appearance.el b/init.d/basics/appearance.el
index 95a7931..368b84e 100644
--- a/init.d/basics/appearance.el
+++ b/init.d/basics/appearance.el
@@ -1,6 +1,6 @@
 ;;; appearance.el --- Configure appearance. -*- lexical-binding: t; -*-
 
-;; Time-stamp: <2020-04-17T04:10:30+0200>
+;; Time-stamp: <2020-04-17T16:28:21+0200>
 
 ;;; Commentary:
 
@@ -56,6 +56,8 @@
     :after (all-the-icons)
     :custom ((doom-themes-treemacs-theme "doom-colors")
              (doom-themes-treemacs-enable-variable-pitch nil))
+    ;; Highlight current line more clearly.
+    :custom-face (hl-line ((t (:background "#000000"))))
     :config (progn (load-theme 'doom-outrun-electric t)
                    (doom-themes-visual-bell-config) ; Flash modeline on error.
                    (doom-themes-treemacs-config)))