diff --git a/docs/nmap-install.xml b/docs/nmap-install.xml
index 3317335e8..63c210951 100644
--- a/docs/nmap-install.xml
+++ b/docs/nmap-install.xml
@@ -963,7 +963,7 @@ the Nmap download page</ulink> provides a file named
 <filename>nmap-<replaceable>version</replaceable>.dmg</filename>, where
 <replaceable>version</replaceable> is the version number of the most
 recent release. The
-<filename>.dmg</filename><indexterm><primary sortas="dmg"><filename>.dmg</filename> (Mac OS X disk image)</primary></indexterm><indexterm><primary>disk image (Mac OS X)</primary></indexterm>
+<filename>.dmg</filename><indexterm><primary sortas="dmg (Mac OS X disk image)"><filename>.dmg</filename> (Mac OS X disk image)</primary></indexterm><indexterm><primary>disk image (Mac OS X)</primary></indexterm>
 file is known as a
 <quote>disk image</quote>. Installation instructions follow:</para>
 
diff --git a/docs/refguide.xml b/docs/refguide.xml
index c68570f5b..383142310 100644
--- a/docs/refguide.xml
+++ b/docs/refguide.xml
@@ -2052,7 +2052,7 @@ supplied. Relative paths are searched for in the following places
 until found:<indexterm><primary>data files</primary><secondary>directory search order</secondary></indexterm><indexterm><primary>scripts, location of</primary></indexterm>
 <filename>--datadir/</filename>; 
 <filename>$NMAPDIR/</filename>;<indexterm><primary><envar>NMAPDIR</envar> environment variable</primary></indexterm>
-<filename>~/.nmap/</filename> (not searched on Windows);<indexterm><primary sortas="nmap"><filename>.nmap</filename> directory</primary></indexterm>
+<filename>~/.nmap/</filename> (not searched on Windows);<indexterm><primary sortas="nmap directory"><filename>.nmap</filename> directory</primary></indexterm>
 NMAPDATADIR/ or<indexterm><primary>NMAPDATADIR</primary></indexterm>
 <filename>./</filename>.  A <filename>scripts/</filename> subdirectory
 is also tried in each of these.</para>
@@ -3675,7 +3675,7 @@ overwhelming requests.  Specify <option>--open</option> to only see
           found there, are searched for in the directory specified by
           the NMAPDIR environmental variable<indexterm><primary><envar>NMAPDIR</envar> environment variable</primary></indexterm>.
           Next comes
-	  <filename>~/.nmap</filename><indexterm><primary sortas="nmap"><filename>.nmap</filename> directory</primary></indexterm>
+	  <filename>~/.nmap</filename><indexterm><primary sortas="nmap directory"><filename>.nmap</filename> directory</primary></indexterm>
           for real and effective UIDs (POSIX systems only) or location of
           the Nmap executable (Win32 only), and then a compiled-in
           location such as <filename>/usr/local/share/nmap</filename> or <filename>/usr/share/nmap</filename>
diff --git a/docs/scripting.xml b/docs/scripting.xml
index 198788b3c..3ca7277bf 100644
--- a/docs/scripting.xml
+++ b/docs/scripting.xml
@@ -366,7 +366,7 @@ supplied. Relative paths are searched for in the following places
 until found:<indexterm><primary>data files</primary><secondary>directory search order</secondary></indexterm><indexterm><primary>scripts, location of</primary></indexterm>
 <filename>--datadir/</filename>; 
 <filename>$NMAPDIR/</filename>;<indexterm><primary><envar>NMAPDIR</envar> environment variable</primary></indexterm>
-<filename>~/.nmap/</filename> (not searched on Windows);<indexterm><primary sortas="nmap"><filename>.nmap</filename> directory</primary></indexterm>
+<filename>~/.nmap/</filename> (not searched on Windows);<indexterm><primary sortas="nmap directory"><filename>.nmap</filename> directory</primary></indexterm>
 NMAPDATADIR/ or<indexterm><primary>NMAPDATADIR</primary></indexterm>
 <filename>./</filename>.  A <filename>scripts/</filename> subdirectory
 is also tried in each of these.</para>