diff --git a/kagi.el b/kagi.el
index 6c7e31f..6b6323c 100644
--- a/kagi.el
+++ b/kagi.el
@@ -153,7 +153,7 @@ FastGPT with the following prompt:
     (dolist (entry kagi--markup-to-face)
       (cl-destructuring-bind (start end face) entry
         (goto-char (point-min))
-        (let ((regexp (rx (seq (literal start) (group (* any)) (literal end)))))
+        (let ((regexp (rx (seq (literal start) (group (*? any)) (literal end)))))
           (while (re-search-forward regexp nil t)
             (let ((escaped-replacement (string-replace "\\" "\\\\" (match-string 1))))
               (replace-match (propertize escaped-replacement 'font-lock-face face) t nil)