diff --git a/jOOQ-website/manual-pdf/jOOQ-manual.fo.xml b/jOOQ-website/manual-pdf/jOOQ-manual.fo.xml
index 4adf27a804..a060f50b0a 100644
--- a/jOOQ-website/manual-pdf/jOOQ-manual.fo.xml
+++ b/jOOQ-website/manual-pdf/jOOQ-manual.fo.xml
@@ -2842,7 +2842,18 @@ public void bind(BindContext context) throws DataAccessException;</fo:block>
       generatortargetdirectory="${basedir}/src"/>
 </target>]]></fo:block>
 
+							<fo:block font-size="11pt">
+								Note that when running code generation with ant's &lt;java/&gt; task,
+								you may have to set fork="true":
+							</fo:block>
 
+<fo:block font-family="Courier" linefeed-treatment="preserve" white-space-collapse="false" white-space-treatment="preserve" font-size="6pt" margin="12pt" padding="4pt" border="2px solid #882222" background-color="#FFEEDD" page-break-inside="avoid"><![CDATA[<!-- Run the code generation task -->
+<target name="generate-test-classes">
+  <java fork="true" classname="org.jooq.util.GenerationTool">
+    [...]
+  </java>
+</target>
+]]></fo:block>
 							<fo:block font-family="Georgia" font-size="16pt" padding-top="10pt" padding-bottom="10pt" page-break-after="avoid">Integrate generation with Maven</fo:block>
 							<fo:block font-size="11pt">Using the official jOOQ-codegen-maven plugin, you can integrate
 								source code generation in your Maven build process: </fo:block>
diff --git a/jOOQ-website/manual-pdf/jOOQ-manual.pdf b/jOOQ-website/manual-pdf/jOOQ-manual.pdf
index 8484692062..66c42e93ea 100644
Binary files a/jOOQ-website/manual-pdf/jOOQ-manual.pdf and b/jOOQ-website/manual-pdf/jOOQ-manual.pdf differ
diff --git a/jOOQ-website/manual-single-page/index.php b/jOOQ-website/manual-single-page/index.php
index 096f2240d2..b93e52a813 100644
--- a/jOOQ-website/manual-single-page/index.php
+++ b/jOOQ-website/manual-single-page/index.php
@@ -1813,7 +1813,18 @@ public void bind(BindContext context) throws DataAccessException;</pre>
       generatortargetdirectory="${basedir}/src"/&gt;
 &lt;/target&gt;</pre>
 
+							<p>
+								Note that when running code generation with ant's &lt;java/&gt; task,
+								you may have to set fork="true":
+							</p>
 
+<pre class="prettyprint lang-xml">&lt;!-- Run the code generation task --&gt;
+&lt;target name="generate-test-classes"&gt;
+  &lt;java fork="true" classname="org.jooq.util.GenerationTool"&gt;
+    [...]
+  &lt;/java&gt;
+&lt;/target&gt;
+</pre>
 							<h3>Integrate generation with Maven</h3>
 							<p>Using the official jOOQ-codegen-maven plugin, you can integrate
 								source code generation in your Maven build process: </p>
diff --git a/jOOQ-website/manual/META/Configuration/index.php b/jOOQ-website/manual/META/Configuration/index.php
index c080bff693..b400554d53 100644
--- a/jOOQ-website/manual/META/Configuration/index.php
+++ b/jOOQ-website/manual/META/Configuration/index.php
@@ -241,7 +241,18 @@ function printContent() {
       generatortargetdirectory="${basedir}/src"/&gt;
 &lt;/target&gt;</pre>
 
+							<p>
+								Note that when running code generation with ant's &lt;java/&gt; task,
+								you may have to set fork="true":
+							</p>
 
+<pre class="prettyprint lang-xml">&lt;!-- Run the code generation task --&gt;
+&lt;target name="generate-test-classes"&gt;
+  &lt;java fork="true" classname="org.jooq.util.GenerationTool"&gt;
+    [...]
+  &lt;/java&gt;
+&lt;/target&gt;
+</pre>
 							<h3>Integrate generation with Maven</h3>
 							<p>Using the official jOOQ-codegen-maven plugin, you can integrate
 								source code generation in your Maven build process: </p>
diff --git a/jOOQ-website/src/main/resources/manual.xml b/jOOQ-website/src/main/resources/manual.xml
index 52dca1da9e..f3d376a735 100644
--- a/jOOQ-website/src/main/resources/manual.xml
+++ b/jOOQ-website/src/main/resources/manual.xml
@@ -1590,7 +1590,18 @@ public void bind(BindContext context) throws DataAccessException;</java>
       generatortargetdirectory="${basedir}/src"/>
 </target>]]></xml>
 
+							<p>
+								Note that when running code generation with ant's &lt;java/&gt; task,
+								you may have to set fork="true":
+							</p>
 
+<xml><![CDATA[<!-- Run the code generation task -->
+<target name="generate-test-classes">
+  <java fork="true" classname="org.jooq.util.GenerationTool">
+    [...]
+  </java>
+</target>
+]]></xml>
 							<h3>Integrate generation with Maven</h3>
 							<p>Using the official jOOQ-codegen-maven plugin, you can integrate
 								source code generation in your Maven build process: </p>