diff --git a/users/wpcarro/emacs/.emacs.d/wpc/constants.el b/users/wpcarro/emacs/.emacs.d/wpc/constants.el
index 69003f595..48bcd9042 100644
--- a/users/wpcarro/emacs/.emacs.d/wpc/constants.el
+++ b/users/wpcarro/emacs/.emacs.d/wpc/constants.el
@@ -20,7 +20,10 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (defconst constants-ci? (maybe-some? (getenv "CI"))
-  "Encoded as t when Emacs is running in CI.")
+  "Defined as t when Emacs is running in CI.")
+
+(defconst constants-osx? (eq system-type 'darwin)
+  "Defined as t when OSX is running.")
 
 (provide 'constants)
 ;;; constants.el ends here
diff --git a/users/wpcarro/emacs/.emacs.d/wpc/wpc-ui.el b/users/wpcarro/emacs/.emacs.d/wpc/wpc-ui.el
index 02904e83a..656c819ee 100644
--- a/users/wpcarro/emacs/.emacs.d/wpc/wpc-ui.el
+++ b/users/wpcarro/emacs/.emacs.d/wpc/wpc-ui.el
@@ -166,7 +166,7 @@
 (when window-system
   ;; On OSX, JetBrainsMono is installed as "JetBrains Mono", and I'm
   ;; not sure how to change that.
-  (let ((font (if (memq window-system '(ns)) "JetBrains Mono" "JetBrainsMono")))
+  (let ((font (if constants-osx? "JetBrains Mono" "JetBrainsMono")))
     (fonts-set font)
     ;; Some themes (e.g. doom-acario-*) change the font for comments. This
     ;; should prevent that.