diff --git a/modules/completion/vertico/config.el b/modules/completion/vertico/config.el
index f2e0e7a4208..1180abaf649 100644
--- a/modules/completion/vertico/config.el
+++ b/modules/completion/vertico/config.el
@@ -150,7 +150,7 @@ orderless."
    :preview-key "C-SPC")
   (consult-customize
    consult-theme
-   :preview-key (list (kbd "C-SPC") :debounce 0.5 'any))
+   :preview-key (list "C-SPC" :debounce 0.5 'any))
   (when (modulep! :lang org)
     (defvar +vertico--consult-org-source
       (list :name     "Org Buffer"