diff --git a/onos-build-vm.py b/onos-build-vm.py
index 1a90c8e..57338a4 100755
--- a/onos-build-vm.py
+++ b/onos-build-vm.py
@@ -66,7 +66,7 @@
     assert 'disk image' in output
     return os.stat( vmdk )[ ST_SIZE ]
 
-def buildONOS( image, out, flavor='trusty64server', installMemory=2048, ovfMemory=2048  ):
+def buildONOS( image, out, flavor='trusty64server', installMemory=2048, ovfMemory=4096  ):
     if not image:
         # build VM from flavor
         #build( flavor )