diff --git a/ui/scripts/system.js b/ui/scripts/system.js
index f05e1ac8acb..6bd51e6cc80 100644
--- a/ui/scripts/system.js
+++ b/ui/scripts/system.js
@@ -11377,6 +11377,13 @@
                                                 data: data,
                                                 success: function(json) {
                                                     var item = json.updateconfigurationresponse.configuration;
+                                                   
+                                                    if (args.data.jsonObj.name == 'cpu.overprovisioning.factor' || args.data.jsonObj.name == 'mem.overprovisioning.factor') {
+                                                    	cloudStack.dialog.notice({
+                                                    		message: 'Please note - you are changing the over provisioning factor for a cluster with vms running. Please refer to the admin guide to understand the capacity calculation.'
+                                                    	});
+                                                    }
+                                                    
                                                     args.response.success({
                                                         data: item
                                                     });