diff --git a/functions/math.xml b/functions/math.xml
index 2d3adbd6da..25cc8489da 100644
--- a/functions/math.xml
+++ b/functions/math.xml
@@ -1,4 +1,4 @@
-<!-- $Revision: 1.43 $ -->
+<!-- $Revision: 1.44 $ -->
  <reference id="ref.math">
   <title>Mathematical Functions</title>
   <titleabbrev>Math</titleabbrev>
@@ -710,11 +710,11 @@ var_dump(hexdec("a0"));
     <funcsynopsis>
      <funcprototype>
       <funcdef>int <function>mt_rand</function></funcdef>
-      <paramdef>int
-       <parameter><optional>min</optional></parameter>
+      <paramdef>[int
+       <parameter>min</parameter>
       </paramdef>
       <paramdef>int
-       <parameter><optional>max</optional></parameter>
+       <parameter>max</parameter>]
       </paramdef>
      </funcprototype>
     </funcsynopsis>
@@ -1051,11 +1051,11 @@ echo pow(-1, 5.5); // error
     <funcsynopsis>
      <funcprototype>
       <funcdef>int <function>rand</function></funcdef>
-      <paramdef>
-       <parameter><optional>int min</optional></parameter>
+      <paramdef>[int 
+       <parameter>min</parameter>
       </paramdef>
       <paramdef>int
-       <parameter><optional>max</optional></parameter>
+       <parameter>max</parameter>]
       </paramdef>
      </funcprototype>
     </funcsynopsis>