diff --git a/runtime.settings b/runtime.settings
index 69075b7ca8bdf2b6510e397318e4085a4e185dc6..1b7878350f003529c99061f0d8dc5a540c2e181e 100644
--- a/runtime.settings
+++ b/runtime.settings
@@ -1,4 +1,5 @@
 # name;options (name will be trimmed, options will be passed as-is)
+#                              :4 used by HostVNC
 ubuntucorp  ;-m 2G -smp 2 -vnc :10 -net user,hostfwd=tcp::30471-:22
 ndpa-build  ;-m 8G -smp 4 -vnc :11 -net user,hostfwd=tcp::30472-:22 -bios /usr/share/edk2-ovmf/x64/OVMF.fd
 archtest    ;-m 4G -smp 4 -vnc :14 -net user,hostfwd=tcp::30474-:22 -bios /usr/share/edk2-ovmf/x64/OVMF.fd