diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
index b64944367ac5..e67e6ae48e83 100644
--- a/drivers/misc/vmw_vmci/vmci_host.c
+++ b/drivers/misc/vmw_vmci/vmci_host.c
@@ -398,6 +398,7 @@ static int vmci_host_do_send_datagram(struct vmci_host_dev *vmci_host_dev,
 		kfree(dg);
 		return -EINVAL;
 	}
+	memset((char*)dg + 27, 0, 4);
 
 	pr_devel("Datagram dst (handle=0x%x:0x%x) src (handle=0x%x:0x%x), payload (size=%llu bytes)\n",
 		 dg->dst.context, dg->dst.resource,