diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index c9f4559d3..0b5ff74b3 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -37,6 +37,15 @@
 
 -->
 
+    <listitem>
+      <para>2009-04-13</para>
+      <itemizedlist>
+        <listitem>
+          <para>[bdubbs] - Remove erroneous --enable threads from M4.</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
     <listitem>
       <para>2009-03-21</para>
       <itemizedlist>
diff --git a/chapter06/m4.xml b/chapter06/m4.xml
index 924e6c7b3..c22282c1d 100644
--- a/chapter06/m4.xml
+++ b/chapter06/m4.xml
@@ -42,7 +42,7 @@
 
     <para>Prepare M4 for compilation:</para>
 
-<screen><userinput remap="configure">./configure --prefix=/usr --enable-threads</userinput></screen>
+<screen><userinput remap="configure">./configure --prefix=/usr</userinput></screen>
 
     <para>Compile the package:</para>
 
diff --git a/general.ent b/general.ent
index ed3272a40..9feb4b20c 100644
--- a/general.ent
+++ b/general.ent
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
-<!ENTITY version "SVN-20090401">
-<!ENTITY releasedate "April  1, 2009">
+<!ENTITY version "SVN-20090413">
+<!ENTITY releasedate "April  13, 2009">
 <!ENTITY copyrightdate "1999-2009"><!-- jhalfs needs a literal dash, not &ndash; -->
 <!ENTITY milestone "7.0">
 <!ENTITY generic-version "development"> <!-- Use "development", "testing", or "x.y[-pre{x}]" -->