diff --git a/extras.d/80-tempest.sh b/extras.d/80-tempest.sh
index 75b702c..0186e36 100644
--- a/extras.d/80-tempest.sh
+++ b/extras.d/80-tempest.sh
@@ -14,6 +14,9 @@
         echo_summary "Initializing Tempest"
         configure_tempest
         init_tempest
+    elif [[ "$1" == "stack" && "$2" == "post-extra" ]]; then
+        # local.conf Tempest option overrides
+        :
     fi
 
     if [[ "$1" == "unstack" ]]; then
diff --git a/extras.d/README.md b/extras.d/README.md
index 88e4265..1dd17da 100644
--- a/extras.d/README.md
+++ b/extras.d/README.md
@@ -19,10 +19,10 @@
     source: always called first in any of the scripts, used to set the
         initial defaults in a lib/* script or similar
 
-    stack: called by stack.sh.  There are three possible values for
+    stack: called by stack.sh.  There are four possible values for
         the second arg to distinguish the phase stack.sh is in:
 
-        arg 2:  install | post-config | extra
+        arg 2:  install | post-config | extra | post-extra
 
     unstack: called by unstack.sh