diff --git a/build/build.xml b/build/build.xml
index aa01281..e229afa 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -24,7 +24,7 @@
 </target>
 
 <target name="archive">
-    <tar compression="gzip" destfile="lc_wp.tar.gz">
+    <tar compression="gzip" destfile="lc_wp.tar.gz" longfile="posix">
         <tarfileset dir="${basedir}/..">
             <include name="*/**" />
             <exclude name="build/**" />