updates based on review feedback
diff --git a/docs/x509.rst b/docs/x509.rst
index f66178a..4246862 100644
--- a/docs/x509.rst
+++ b/docs/x509.rst
@@ -736,12 +736,19 @@
:type: :class:`ObjectIdentifier`
- Either :data:`OID_OCSP` or :data:`OID_CA_ISSUERS`
+ The access method defines what the ``access_location`` means. It must
+ be either :data:`OID_OCSP` or :data:`OID_CA_ISSUERS`. If it is
+ :data:`OID_OCSP` the access location will be where to obtain OCSP
+ information for the certificate. If it is :data:`OID_CA_ISSUERS` the
+ access location will provide additional information about the issuing
+ certificate.
.. attribute:: access_location
:type: :class:`GeneralName`
+ Where to access the information defined by the access method.
+
Object Identifiers
~~~~~~~~~~~~~~~~~~