diff --git a/vmware-base/src/com/cloud/hypervisor/vmware/mo/VirtualMachineMO.java b/vmware-base/src/com/cloud/hypervisor/vmware/mo/VirtualMachineMO.java
index b700b6d8f63..1ab325be14c 100644
--- a/vmware-base/src/com/cloud/hypervisor/vmware/mo/VirtualMachineMO.java
+++ b/vmware-base/src/com/cloud/hypervisor/vmware/mo/VirtualMachineMO.java
@@ -3281,7 +3281,7 @@ public class VirtualMachineMO extends BaseMO {
         virtualHardwareVersion = getVirtualHardwareVersion();
 
         // Check if guest operating system supports memory hotadd
-        if (guestOsDescriptor.isSupportsMemoryHotAdd()) {
+        if (guestOsDescriptor != null && guestOsDescriptor.isSupportsMemoryHotAdd()) {
             guestOsSupportsMemoryHotAdd = true;
         }
         // Check if virtual machine is using hardware version 7 or later.