diff --git a/modules/lang/racket/config.el b/modules/lang/racket/config.el
index 853a877d9..124cc434f 100644
--- a/modules/lang/racket/config.el
+++ b/modules/lang/racket/config.el
@@ -34,8 +34,7 @@
     (when (featurep! :checkers syntax)
       (add-hook! 'racket-xp-mode-hook
         (defun +racket-disable-flycheck-h ()
-          (unless (memq 'racket flycheck-disabled-checkers)
-            (push 'racket flycheck-disabled-checkers))))))
+          (cl-pushnew 'racket flycheck-disabled-checkers)))))
 
   (unless (or (featurep! :editor parinfer)
               (featurep! :editor lispy))