diff --git a/build.xml b/build.xml
index 4e03f6f8..c4ffbb3f 100644
--- a/build.xml
+++ b/build.xml
@@ -284,6 +284,7 @@
 			<option value="-Dunixfs=false" />
 			<option value="-DuseExtendedFileAttributes=true" />
 			<option value="-DuseCreationDate=false" />
+			<option value="-DthreadPool=16" />
 
 			<option value="-Djava.net.useSystemProxies=true" />
 			<option value="-Dsun.net.client.defaultConnectTimeout=10000" />