diff --git a/build.xml b/build.xml
index 9fb005e151409bd32cc25a4fae1dcbf68072fe13..b0dc47af3ac167c3cb4a1461a14f4ed0d17c7ae9 100644
--- a/build.xml
+++ b/build.xml
@@ -148,7 +148,7 @@
     <zip zipfile="${FTPDir}/align-${version}.zip">
       <fileset dir="." includes="**/*"/>
     </zip>
-    <copy todir="${WebDir}" filtering="true">
+    <copy todir="${WebDir}" filtering="true" overwrite="true">
       <fileset dir="html" includes="**/*.html,**/*.css"/>
     </copy>
     <!--copy todir="${WebDir}">