diff --git a/lib/html2text.php b/lib/html2text.php
index f626f8d9164..36f22f24f75 100644
--- a/lib/html2text.php
+++ b/lib/html2text.php
@@ -468,7 +468,7 @@ class html2text
 
         // Run our defined search-and-replace
         $text = preg_replace($this->search, $this->replace, $text);
-        $text = preg_replace_callback($this->callback_search, array('html2text', '_preg_callback'), $text);
+        $text = preg_replace_callback($this->callback_search, array(&$this, '_preg_callback'), $text);
 
         // Replace known html entities
         $text = utf8_encode(html_entity_decode($text));
diff --git a/lib/html2text_readme.txt b/lib/html2text_readme.txt
index a4079e68553..b59897f7221 100644
--- a/lib/html2text_readme.txt
+++ b/lib/html2text_readme.txt
@@ -21,4 +21,19 @@ instead of:
 (see http://nz.php.net/manual/en/function.html-entity-decode.php#89483)
 
 
+2- fixed error in preg_replace_callback on php4
+
+--- a/lib/html2text.php
++++ b/lib/html2text.php
+@@ -468,7 +468,7 @@ class html2text
+ 
+         // Run our defined search-and-replace
+         $text = preg_replace($this->search, $this->replace, $text);
+-        $text = preg_replace_callback($this->callback_search, array('html2text', '_preg_callback'), $text);
++        $text = preg_replace_callback($this->callback_search, array(&$this, '_preg_callback'), $text);
+ 
+         // Replace known html entities
+         $text = utf8_encode(html_entity_decode($text));
+
+
  -- Francois Marier <francois@catalyst.net.nz>  2009-05-22