diff --git a/functions/math.xml b/functions/math.xml
index 92ab30b3d6..47c4a246ce 100644
--- a/functions/math.xml
+++ b/functions/math.xml
@@ -689,12 +689,14 @@ $binary = base_convert ($hexadecimal, 16, 2);
      function.  <function>mt_rand</function> function is a drop-in
      replacement for this.  It uses a random number generator with
      known characteristics, the Mersenne Twister, which will produce
-     random numbers that should be suitable for cryptographic purposes
-     and is four times faster than what the average libc provides. The
-     Homepage of the Mersenne Twister can be found at <ulink
-     url="&url.mersenne;">&url.mersenne;</ulink>, and an optimized
-     version of the MT source is available from <ulink
-     url="&url.mersenne.twister;">&url.mersenne.twister;</ulink>.
+     random numbers that should be suitable for seeding some kinds
+     of cryptography (see the home pages for details) and is four
+     times faster than what the average libc provides. The Homepage
+     of the Mersenne Twister can be found at
+     <ulink url="&url.mersenne;">&url.mersenne;</ulink>, and an
+     optimized version of the MT source is available from
+     <ulink url="&url.mersenne.twister;">&url.mersenne.twister;
+     </ulink>.
     </simpara>
     <simpara>
      If called without the optional <parameter>min</parameter>,