diff --git a/docs/x509.rst b/docs/x509.rst
index 48cb073..d231329 100644
--- a/docs/x509.rst
+++ b/docs/x509.rst
@@ -919,6 +919,10 @@
         :type: list
 
         A list consisting of :term:`text` and/or :class:`UserNotice` objects.
+        If the value is text it is a pointer to the practice statement
+        published by the certificate authority. If it is a user notice it is
+        meant for display to the relying party when the certificate is
+        used.
 
 .. class:: UserNotice
 
@@ -957,7 +961,7 @@
 
         :type: :term:`text` or None
 
-    .. attribute :: notice_numbers
+    .. attribute:: notice_numbers
 
         :type: list or None