diff --git a/include/X11/keysymdef.h b/include/X11/keysymdef.h
index 3360a36..6bdd920 100644
--- a/include/X11/keysymdef.h
+++ b/include/X11/keysymdef.h
@@ -103,6 +103,7 @@ SOFTWARE.
  * that match one of these Perl regular expressions:
  *
  *    /^\#define XK_([a-zA-Z_0-9]+)\s+0x([0-9a-f]+)\s*\/\* U\+([0-9A-F]{4,6}) (.*) \*\/\s*$/
+ *    /^\#define XK_([a-zA-Z_0-9]+)\s+0x([0-9a-f]+)\s*\/\*<U\+([0-9A-F]{4,6}) (.*)>\*\/\s*$/
  *    /^\#define XK_([a-zA-Z_0-9]+)\s+0x([0-9a-f]+)\s*\/\*\(U\+([0-9A-F]{4,6}) (.*)\)\*\/\s*$/
  *    /^\#define XK_([a-zA-Z_0-9]+)\s+0x([0-9a-f]+)\s*(\/\*\s*(.*)\s*\*\/)?\s*$/
  *