diff --git a/en_US.ISO8859-1/articles/contributors/contrib.additional.sgml b/en_US.ISO8859-1/articles/contributors/contrib.additional.sgml
index 945410a70a..5560291ef6 100644
--- a/en_US.ISO8859-1/articles/contributors/contrib.additional.sgml
+++ b/en_US.ISO8859-1/articles/contributors/contrib.additional.sgml
@@ -9580,6 +9580,11 @@
 	<email>van@ee.lbl.gov</email></para>
     </listitem>
 
+    <listitem>
+      <para>Vaclav Haisman
+	<email>v.haisman@sh.cvut.cz</email></para>
+    </listitem>
+
     <listitem>
       <para>Vasek Balcar
 	<email>vasek@ti.cz</email></para>