diff --git a/LDP/retired/PLD-Guide/installer-theory.xml b/LDP/retired/PLD-Guide/installer-theory.xml
index d60efae6..e676b871 100644
--- a/LDP/retired/PLD-Guide/installer-theory.xml
+++ b/LDP/retired/PLD-Guide/installer-theory.xml
@@ -938,7 +938,7 @@
 		  <listitem>
 		    <para>
 		      Disk to put partition onto, e.g. <quote>/dev/hda</quote>. The disk must be
-		      already specified in in <literal>dist_devices</literal> list.
+		      already specified in <literal>dist_devices</literal> list.
 		      If the action for given disk is use_existing, proper partition number
 		      must be specified too, e.g. <quote>/dev/hda1</quote>.
 		    </para>