diff --git a/agent/conf/agent.properties b/agent/conf/agent.properties
index 5f5f3682afd..8bd9756ef27 100644
--- a/agent/conf/agent.properties
+++ b/agent/conf/agent.properties
@@ -114,3 +114,7 @@ domr.scripts.dir=scripts/network/domr/kvm
 # for examples:"Conroe" "Penryn", "Nehalem", "Westmere", "pentiumpro" and so
 # on,run virsh capabilities for more details.
 # guest.cpu.model=
+#
+# vm.memballoon.disable=true
+# Disable memory ballooning on vm guests for overcommit, by default overcommit
+# feature enables balloon and sets currentMemory to a minimum value