diff --git a/installer.xml b/installer.xml
index 95b8c36..b77b737 100644
--- a/installer.xml
+++ b/installer.xml
@@ -775,9 +775,8 @@
         <echo>${INFO_INSTALLING_CONFIG_FILES}</echo>
         <antcall target="fixup-config-files-version" />
         <antcall target="fixup-config-files-swfversion" />
-        <tstamp>
-            <format property="build.number.date" pattern="yyyyMMdd" />
-        </tstamp>
+        <tstamp />
+        <property name="build.number.date" value="${DSTAMP}" />
         <replace file="${FLEX_HOME}/frameworks/flex-config.xml">
             <replacefilter token="{playerglobalHome}"
                 value="libs/player"/>