diff --git a/docs/manual/CoreTasks/ear.html b/docs/manual/CoreTasks/ear.html
index 989aa3647..168495e99 100644
--- a/docs/manual/CoreTasks/ear.html
+++ b/docs/manual/CoreTasks/ear.html
@@ -97,6 +97,11 @@ attributes of zipfilesets in a Zip or Jar task.)</p>
       the destination file if it already exists.</td>
     <td valign="top" align="center">No</td>
   </tr>
+  <tr>
+    <td valign="top">duplicate</td>
+    <td valign="top">behavior when a duplicate file is found.  Valid values are &quot;add&quot;, &quot;preserve&quot;, and &quot;fail&quot;.  The default value is &quot;add&quot;.  </td>
+    <td valign="top" align="center">No</td>
+  </tr>
 </table>
 <h3>Nested elements</h3>
 <h4>metainf</h4>
diff --git a/docs/manual/CoreTasks/war.html b/docs/manual/CoreTasks/war.html
index db5447b1a..a141f21a6 100644
--- a/docs/manual/CoreTasks/war.html
+++ b/docs/manual/CoreTasks/war.html
@@ -105,6 +105,11 @@ attributes of zipfilesets in a Zip or Jar task.)</p>
       the destination file if it already exists.</td>
     <td valign="top" align="center">No</td>
   </tr>
+  <tr>
+    <td valign="top">duplicate</td>
+    <td valign="top">behavior when a duplicate file is found.  Valid values are &quot;add&quot;, &quot;preserve&quot;, and &quot;fail&quot;.  The default value is &quot;add&quot;.  </td>
+    <td valign="top" align="center">No</td>
+  </tr>
 </table>
 <h3>Nested elements</h3>
 <h4>lib</h4>