diff --git a/doc/deploy.bat b/doc/deploy.bat
index 778ff6e804..03dc79a4db 100644
--- a/doc/deploy.bat
+++ b/doc/deploy.bat
@@ -1,4 +1,4 @@
-set MAVEN_OPTS=-Xmx1024m -XX:MaxPermSize=512m
+set MAVEN_OPTS=-Xmx768m -XX:MaxPermSize=512m
 call maven -Dmaven.jar.override=on -Dmaven.jar.clover-ant=1.3.3_01 clean
 call maven -Dmaven.jar.override=on -Dmaven.jar.clover-ant=1.3.3_01 multiproject:clean
 call maven -Dmaven.jar.override=on -Dmaven.jar.clover-ant=1.3.3_01 multiproject:artifact