diff --git a/reference/info/functions/get-defined-constants.xml b/reference/info/functions/get-defined-constants.xml
index cfabf42ba1..c13489b444 100644
--- a/reference/info/functions/get-defined-constants.xml
+++ b/reference/info/functions/get-defined-constants.xml
@@ -10,7 +10,7 @@
   &reftitle.description;
   <methodsynopsis>
    <type>array</type><methodname>get_defined_constants</methodname>
-   <methodparam choice="opt"><type>bool</type><parameter>categorize</parameter></methodparam>
+   <methodparam choice="opt"><type>bool</type><parameter>categorize</parameter><initializer>false</initializer></methodparam>
   </methodsynopsis>
   <para>
    Returns the names and values of all the constants currently defined.
@@ -122,6 +122,15 @@ Array
         are categorized under <literal>mhash</literal>.
        </entry>
       </row>
+      <row>
+       <entry>5.2.11</entry>
+       <entry>
+        The <parameter>categorize</parameter> parameter now operates appropriately.
+        Previously, the <parameter>categorize</parameter> parameter was interpreted
+        as <literal>!is_null($categorize)</literal>, making any value other than &null;
+        force the constants to be categorized.
+       </entry>
+      </row>
       <row>
        <entry>5.0.0</entry>
        <entry>