diff --git a/build.xml b/build.xml
index 49b733b5..5cd84766 100644
--- a/build.xml
+++ b/build.xml
@@ -526,7 +526,7 @@
 		<attribute name="o"/>
 		<attribute name="x"/>
 		<sequential>
-			<java fork="true" maxmemory="384m" failonerror="true" classname="org.apache.xalan.xslt.Process">
+			<java fork="true" maxmemory="512m" failonerror="true" classname="org.apache.xalan.xslt.Process">
 				<classpath>
 					<fileset dir="${tools.xalan}/lib">
 						<include name="**/*.jar"/>