diff --git a/chapter08/grep.xml b/chapter08/grep.xml
index 9069c3f3e..33b0896c2 100644
--- a/chapter08/grep.xml
+++ b/chapter08/grep.xml
@@ -89,7 +89,7 @@
         <term><command>fgrep</command></term>
         <listitem>
           <para>Prints lines matching a list of fixed strings.
-          It is obsoleted, use <command>grep -F</command> instead</para>
+          It is obsolete, use <command>grep -F</command> instead</para>
           <indexterm zone="ch-system-grep fgrep">
             <primary sortas="b-fgrep">fgrep</primary>
           </indexterm>