diff --git a/build.xml b/build.xml
index 10c840e37da7..cf640ec135ef 100644
--- a/build.xml
+++ b/build.xml
@@ -16,7 +16,7 @@
     <attribute name="script" />
     <sequential>
       <java failonerror="true" jar="${project.home}/lib/ant/lib/ant-launcher.jar" fork="true">
-        <jvmarg line="-Xmx512m -XX:MaxPermSize=152m"/>
+        <jvmarg line="-Xmx612m -XX:MaxPermSize=152m"/>
 
         <arg line="&quot;-Dgant.script=@{script}&quot;"/>
         <arg line="&quot;-Dteamcity.build.tempDir=${tmp.dir}&quot;"/>