diff --git a/agent/conf/agent.properties b/agent/conf/agent.properties
index 6b68568de85..b45526aa6af 100644
--- a/agent/conf/agent.properties
+++ b/agent/conf/agent.properties
@@ -201,6 +201,13 @@ hypervisor.type=kvm
 # reports to the Management Server
 # Default: 0
 #
+# host.reserved.mem.mb = 0
+# How much host memory to reserve for non-allocation. 
+# A useful parameter if a node uses some other software that requires memory,
+# or in case that OOM Killer kicks in sometimes.
+# If this parameter is used, host.overcommit.mem.mb must be set to 0.
+# Default value: 0
+#
 # vm.watchdog.model=i6300esb
 # The model of Watchdog timer to present to the Guest
 # For all models refer to the libvirt documentation.