diff --git a/rebase-notes.txt b/rebase-notes.txt
index 937c43e22..baa9ab52b 100644
--- a/rebase-notes.txt
+++ b/rebase-notes.txt
@@ -1,8 +1,11 @@
 Linux 4.16 rebase notes:
 - Consider turning off all the IMA features?
+- F27 and earlier, disable vboxguest driver (to avoid conflict with the out of
+  tree versions which get auto-installed by scripts from vbox upstream)
+ -Unset CONFIG_VBOXGUEST
 
 Linux 4.15 rebase notes:
-- Disable power-management features enabled for F28+
+- F27 and earlier, disable new F28+ only power-management features:
  -Set CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0
  -Set CONFIG_SATA_MOBILE_LPM_POLICY=0
  -Unset CONFIG_BT_HCIBTUSB_AUTOSUSPEND