diff --git a/guestbook-ng.pl b/guestbook-ng.pl
index bde507f..51dc9c6 100755
--- a/guestbook-ng.pl
+++ b/guestbook-ng.pl
@@ -43,14 +43,10 @@ under sub ($c) {
     unless ($c->session('counted')) {
         $c->counter->increment_visitor_count();
         $c->session(
-            expires => time() + 3600,
-            counted => 1
+            expiration => 1800,
+            counted    => 1
             );
     }
-    # Delete this since I was supposed to be using 'expires' instead
-    # of 'expiration'; the difference is outlined here:
-    # https://docs.mojolicious.org/Mojolicious/Controller#session
-    delete $c->session->{'expiration'} if $c->session('expiration');
 
     $c->stash(status => 403) if $c->flash('error');