Index: security/chapter.xml
===================================================================
--- security/chapter.xml
+++ security/chapter.xml
@@ -2110,7 +2110,7 @@
        <para><emphasis>IP Payload Compression Protocol
            (<acronym>IPComp</acronym></emphasis>): this protocol
          tries to increase communication performance by compressing
-         the <acronym>IP </acronym> payload in order ro reduce the
+         the <acronym>IP </acronym> payload in order to reduce the
          amount of data sent.</para>
       </listitem>
     </itemizedlist>