diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index 8a3807262..1b17760f2 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -43,6 +43,15 @@
     appropriate for the entry or if needed the entire day's listitem.
     -->
 
+    <listitem>
+      <para>2021-07-26</para>
+      <itemizedlist>
+        <listitem>
+          <para>[thomas] - Fix a programming error in shadow-4.9</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
     <listitem>
       <para>2021-07-25</para>
       <itemizedlist>
diff --git a/chapter08/shadow.xml b/chapter08/shadow.xml
index 9aa196421..bd2651b8d 100644
--- a/chapter08/shadow.xml
+++ b/chapter08/shadow.xml
@@ -95,6 +95,10 @@ find man -name Makefile.in -exec sed -i 's/passwd\.5 / /'   {} \;</userinput></s
 
 <screen><userinput remap="pre">sed -i 's/1000/999/' etc/useradd</userinput></screen>
 -->
+    <para>Fix a simple programming error by modifying a file with following command:</para>
+
+<screen><userinput remap="pre">sed -e "224s/rounds = SHA_ROUNDS_DEFAULT/min_&amp;/" -i libmisc/salt.c</userinput></screen>
+
     <para>Prepare Shadow for compilation:</para>
 
 <screen><userinput remap="configure">touch /usr/bin/passwd