diff --git a/pg-sessions.lisp b/pg-sessions.lisp
index 19250b7..40cd335 100644
--- a/pg-sessions.lisp
+++ b/pg-sessions.lisp
@@ -37,10 +37,6 @@
                    :documentation "The session string encodes enough
 data to safely retrieve this session.  It is sent to the browser as a
 cookie value or as a GET parameter.")
-   (user-agent :initarg :user-agent
-               :accessor pg-session-user-agent)
-   (remote-addr :initarg :remote-addr
-                :accessor pg-session-remote-addr)
    (session-start :col-type bigint :initform (get-universal-time) :accessor pg-session-start)
    (last-click :col-type bigint :initform (get-universal-time) :accessor pg-session-last-click
                :documentation "The last time this session was used.")
@@ -62,9 +58,7 @@ stored in the postmodern database."))
     (loop for code across (md5:md5sum-string string)
 	  do (format s "~2,'0x" code))))
 
-(defun encode-session-string (id user-agent remote-addr start)
-  "Creates a uniquely encoded session string based on the values ID,
-USER-AGENT, and START"
+(defun encode-session-string (id start)
   ;; *PG-SESSION-SECRET* is used twice due to known theoretical
   ;; vulnerabilities of MD5 encoding
   (md5-hex (concatenate 'string
@@ -72,18 +66,12 @@ USER-AGENT, and START"
 			(md5-hex (format nil "~A~A~@[~A~]~@[~A~]~A"
                                          *pg-session-secret*
                                          id
-                                         (and hunchentoot:*use-user-agent-for-sessions*
-                                              user-agent)
-                                         (and hunchentoot:*use-remote-addr-for-sessions*
-                                              remote-addr)
                                          start)))))
 
 (defun stringify-session (session)
   "Creates a string representing of the SESSION object SESSION. See
 ENCODE-SESSION-STRING."
   (encode-session-string (pg-session-id session)
-                         (pg-session-user-agent session)
-                         (pg-session-remote-addr session)
                          (pg-session-start session)))
 
 (defun session-too-old-p (session)
@@ -122,9 +110,7 @@ case the function will also send a session cookie to the browser."
       (return-from pg-start-session session))
     (setf session
           (apply #'make-dao
-                 (append `(,*session-type*
-                           :user-agent ,(hunchentoot:user-agent hunchentoot:*request*)
-                           :remote-addr ,(hunchentoot:real-remote-addr hunchentoot:*request*))
+                 (append `(,*session-type*)
                          args)))
     (setf (hunchentoot:session hunchentoot:*request*) session)
     (setf (pg-session-string session) (stringify-session session))
@@ -145,9 +131,6 @@ will not create a new one."
         (hunchentoot:log-message* :info "Session with ID ~A too old" id))
       (pg-remove-session session)
       (setq session nil))
-    (when session
-      (setf (pg-session-user-agent session) (hunchentoot:user-agent request)
-            (pg-session-remote-addr session) (hunchentoot:real-remote-addr request)))
     session))
 
 (defmethod hunchentoot:session-verify ((request hunchentoot:request))
@@ -168,17 +151,13 @@ will not create a new one."
         (destructuring-bind (id-string session-string)
             (cl-ppcre:split ":" session-identifier :limit 2)
           (let* ((id (parse-integer id-string))
-                 (session (get-stored-session id request))
-                 (user-agent (hunchentoot:user-agent request))
-                 (remote-addr (hunchentoot:remote-addr request)))
+                 (session (get-stored-session id request)))
             (cond
               ((and session
                     (string= session-string
                              (pg-session-string session))
                     (string= session-string
                              (encode-session-string id
-                                                    user-agent
-                                                    (hunchentoot:real-remote-addr request)
                                                     (pg-session-start session))))
                ;; the session key presented by the client is valid
                (setf (pg-session-last-click session) (get-universal-time))