diff --git a/doom-modeline.el b/doom-modeline.el
index 3e413ed..7599687 100644
--- a/doom-modeline.el
+++ b/doom-modeline.el
@@ -941,6 +941,10 @@ with `evil-ex-substitute', and/or 4. The number of active `iedit' regions."
      (when (and (eq op 'set) (integerp val))
        (doom-modeline-refresh-bars val doom-modeline-height)))))
 
+(add-hook 'after-setting-font-hook
+          '(lambda ()
+             (doom-modeline-refresh-bars)))
+
 
 ;;
 ;; window number
@@ -1087,15 +1091,17 @@ See `mode-line-percent-position'.")
 ;;
 
 (defun doom-modeline-refresh-bars (&optional width height)
-  "Refreash mode-line bars with `WIDTH' and `HEIGHT'."
+  "Refresh mode-line bars with `WIDTH' and `HEIGHT'."
   (setq doom-modeline--bar-active
         (doom-modeline--make-xpm 'doom-modeline-bar
                                  (or width doom-modeline-bar-width)
-                                 (or height doom-modeline-height))
+                                 (max (or height doom-modeline-height)
+                                      (frame-char-height)))
         doom-modeline--bar-inactive
         (doom-modeline--make-xpm 'doom-modeline-inactive-bar
                                  (or width doom-modeline-bar-width)
-                                 (or height doom-modeline-height))))
+                                 (max (or height doom-modeline-height)
+                                      (frame-char-height)))))
 
 ;;;###autoload
 (defun doom-modeline-init ()