diff --git a/build.xml b/build.xml
index 76cdba2cfaa9a82949ecb527e33c215cff5eb9dd..5412746ef8cc784e001c2cef531183a4d42c2aae 100644
--- a/build.xml
+++ b/build.xml
@@ -31,7 +31,7 @@
     <attribute name="target" default="default"/>
     <sequential>
       <java failonerror="true" jar="${project.home}/lib/ant/lib/ant-launcher.jar" fork="true">
-        <jvmarg line="-Xmx812m -XX:MaxPermSize=152m"/>
+        <jvmarg line="-Xmx812m"/>
         <sysproperty key="jna.nosys" value="true" />
         <sysproperty key="java.awt.headless" value="true"/>
         <sysproperty key="gant.script" value="@{script}"/>