diff --git a/en_US.ISO8859-1/books/handbook/linuxemu/chapter.sgml b/en_US.ISO8859-1/books/handbook/linuxemu/chapter.sgml
index e6ef6c83fd..5e1af2c6ad 100644
--- a/en_US.ISO8859-1/books/handbook/linuxemu/chapter.sgml
+++ b/en_US.ISO8859-1/books/handbook/linuxemu/chapter.sgml
@@ -129,7 +129,7 @@ Id Refs Address    Size     Name
  7    1 0xc24db000 d000     linux.ko</screen>
     <indexterm>
       <primary>kernel options</primary>
-      <secondary>LINUX</secondary>
+      <secondary>COMPAT_LINUX</secondary>
     </indexterm>
 
     <para>If for some reason you do not want to or cannot load the KLD,