diff --git a/library/README.md b/library/README.md
index 22d55515a1..74265d41fd 100644
--- a/library/README.md
+++ b/library/README.md
@@ -6,9 +6,9 @@ The version and status of each is summarized below:
 
 ## PHP libraries
 
-| directory  | project    | version | status         |
-|------------|------------|---------|----------------|
-| rssbuilder | RSSBuilder | 2.2.1   | patched [1][2] |
+| directory  | project    | version | status              |
+|------------|------------|---------|---------------------|
+| rssbuilder | RSSBuilder | 2.2.1   | patched [1],[2],[4] |
 
 
 ## Javascript/CSS libraries
@@ -30,10 +30,10 @@ The version and status of each is summarized below:
 **Notes**
 
 1. removed `__autoload` function
-2. fixed SYSTEM NOTICE 'Only variables should be passed by reference'
+2. fixed SYSTEM NOTICE 'Only variables should be passed by reference' (#25213)
 3. fixed scrolling regression in navigation buttons, 
    patch submitted upstream https://github.com/javve/list.js/pull/750
-
+4. fixed TypeError when creating empty feed on PHP 8 (#33634)
 
 
 ## Upstream projects
diff --git a/library/rssbuilder/class.ObjectIterator.inc.php b/library/rssbuilder/class.ObjectIterator.inc.php
index 59dc9785af..927ab1bff2 100644
--- a/library/rssbuilder/class.ObjectIterator.inc.php
+++ b/library/rssbuilder/class.ObjectIterator.inc.php
@@ -3,7 +3,7 @@
 * Class for creating an RSS-feed
 * @author Michael Wimmer <flaimo@gmail.com>
 * @category flaimo-php
-* @copyright Copyright © 2002-2008, Michael Wimmer
+* @copyright Copyright © 2002-2008, Michael Wimmer
 * @license GNU General Public License v3
 * @link http://code.google.com/p/flaimo-php/
 * @package RSS
@@ -36,6 +36,7 @@ public function key() {
     } // end function
     
     public function size() {
+		if ($this->objectlist->objects === null) return 0;
 		return count($this->objectlist->objects);
     } // end function
 
@@ -43,4 +44,3 @@ public function rewind() {
 		$this->current = 0;
 	} // end function
 } // end class
-?>