diff --git a/lisp/lib/docs.el b/lisp/lib/docs.el
index 83261c88e..72c8920e0 100644
--- a/lisp/lib/docs.el
+++ b/lisp/lib/docs.el
@@ -102,7 +102,7 @@
   "Create a header link according to SPEC."
   (let ((icon (and (plist-get spec :icon)
                    (funcall (or (plist-get spec :icon-function)
-                                #'nerd-icons-material)
+                                #'nerd-icons-mdicon)
                             (plist-get spec :icon))))
         (label (pcase (plist-get spec :label)
                  ((and (pred functionp) lab)
diff --git a/modules/email/mu4e/autoload/email.el b/modules/email/mu4e/autoload/email.el
index c6abc6ebc..b740868ac 100644
--- a/modules/email/mu4e/autoload/email.el
+++ b/modules/email/mu4e/autoload/email.el
@@ -132,7 +132,7 @@ will also be the width of all other printable characters."
   (setq mu4e-use-fancy-chars t
         mu4e-headers-draft-mark      (cons "D" (+mu4e-normalised-icon "nf-fa-pencil"))
         mu4e-headers-flagged-mark    (cons "F" (+mu4e-normalised-icon "nf-fa-flag"))
-        mu4e-headers-new-mark        (cons "N" (+mu4e-normalised-icon "nf-md-sync" :set "material" :height 0.8 :v-adjust -0.10))
+        mu4e-headers-new-mark        (cons "N" (+mu4e-normalised-icon "nf-md-sync" :set "mdicon" :height 0.8 :v-adjust -0.10))
         mu4e-headers-passed-mark     (cons "P" (+mu4e-normalised-icon "nf-fa-arrow_right"))
         mu4e-headers-replied-mark    (cons "R" (+mu4e-normalised-icon "nf-fa-reply"))
         mu4e-headers-seen-mark       (cons "S" "") ;(+mu4e-normalised-icon "eye" :height 0.6 :v-adjust 0.07 :color "dsilver"))