diff --git a/tox.ini b/tox.ini
index a7a0b2d7b95d..fdc78bdeea93 100644
--- a/tox.ini
+++ b/tox.ini
@@ -106,10 +106,6 @@ commands =
 # NOTE(sdague): this target does not use constraints because
 # upstream infra does not yet support it. Once that's fixed, we can
 # drop the install_command.
-#
-# we do not used -W here because we are doing some slightly tricky
-# things to build a single page document, and as such, we are ok
-# ignoring the duplicate stanzas warning.
 install_command = pip install -U --force-reinstall {opts} {packages}
 commands =
   rm -rf api-ref/build