diff --git a/reference/filter/reference.xml b/reference/filter/reference.xml
index c6225026b8..f0fbdd3eac 100644
--- a/reference/filter/reference.xml
+++ b/reference/filter/reference.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.12 $ -->
+<!-- $Revision: 1.13 $ -->
 <!-- Purpose: basic.vartype -->
 <!-- Membership: pecl -->
 <!-- Generated by xml_proto.php v2.4. Found in /scripts directory of phpdoc. -->
@@ -207,7 +207,7 @@
         <entry></entry>
         <entry></entry>
         <entry>
-         Remove all characters except digits and <literal>+-</literal>.
+         Remove all characters except digits, plus and minus sign.
         </entry>
        </row>
        <row>