diff --git a/scripts/local_facts.fact b/scripts/local_facts.fact
index a3fdd96a4..b984f1d27 100755
--- a/scripts/local_facts.fact
+++ b/scripts/local_facts.fact
@@ -61,7 +61,8 @@ OS_VER=$OS-$VERSION_ID
 # its /etc/os-release can help testing this unreleased OS: VERSION_ID="11"
 
 # 2021-06-19: Ubuntu 21.10 (Impish Indri) not yet supported but this
-# unreleased OS can help testing.
+# unreleased OS can help testing.  For now this means MANUALLY changing
+# php_version: 7.4 to 8.0 in vars/ubuntu-21.yml
 
 case $OS_VER in
     "debian-10"    | \