diff --git a/tox.ini b/tox.ini
index 86a1e794f..ca14f55af 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,7 +23,7 @@ commands =
     stestr run {posargs}
     stestr slowest
 
-[testenv:functional{-py39,-py310,-py311,-py312}]
+[testenv:functional{,-py39,-py310,-py311,-py312}]
 description =
     Run functional tests.
 # Some jobs (especially heat) takes longer, therefore increase default timeout