diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5ff81466..53a6e422 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,6 @@ on:
         type: string
         description: 'Python interpreter version'
       tox-env:
-        default: 'test'
         type: string
         description: 'Tox environment to run'
       checkout-ref: