diff --git a/etc/README.mistral.conf b/etc/README.mistral.conf
new file mode 100644
index 000000000..a72adbc27
--- /dev/null
+++ b/etc/README.mistral.conf
@@ -0,0 +1,5 @@
+The mistral.conf sample file is no longer generated and
+maintained in Trunk.  To generate your own version of
+mistral.conf, use the following command:
+
+tox -egenconfig
\ No newline at end of file