diff --git a/preserves.el b/preserves.el
index e39462a..439d9c7 100644
--- a/preserves.el
+++ b/preserves.el
@@ -43,7 +43,7 @@
 
 (defvar preserves-font-lock-keywords
   (list
-   '("\\_<\\(~\\|[A-Z]\\)[^[:space:].\n]*\\>" . font-lock-type-face)
+   '("\\_<\\(~\\|[A-Z]\\)[^][)(}{[:space:].\n]*\\>" . font-lock-type-face)
    '("\\\\[[:space:]]*?\n" . font-lock-warning-face)
    '("\\." . font-lock-builtin-face)
    (cons (regexp-opt '("->"