diff --git a/modules/prelude-vertico.el b/modules/prelude-vertico.el
index 7335730..c31624d 100644
--- a/modules/prelude-vertico.el
+++ b/modules/prelude-vertico.el
@@ -55,14 +55,14 @@
   :init
   ;; Add prompt indicator to `completing-read-multiple'.
   ;; We display [CRM<separator>], e.g., [CRM,] if the separator is a comma.
-  (defun crm-indicator (args)
+  (defun prelude-crm-indicator (args)
     (cons (format "[CRM%s] %s"
                   (replace-regexp-in-string
                    "\\`\\[.*?]\\*\\|\\[.*?]\\*\\'" ""
                    crm-separator)
                   (car args))
           (cdr args)))
-  (advice-add #'completing-read-multiple :filter-args #'crm-indicator)
+  (advice-add #'completing-read-multiple :filter-args #'prelude-crm-indicator)
 
   ;; Do not allow the cursor in the minibuffer prompt
   (setq minibuffer-prompt-properties