diff --git a/.github/workflows/black.yml b/.github/workflows/black.yml
index 8ffa0f7..8796b27 100644
--- a/.github/workflows/black.yml
+++ b/.github/workflows/black.yml
@@ -8,7 +8,7 @@ name: Black
   push:
     branches:
     - master
-  pull_request: null
+  pull_request:
 jobs:
   Black:
     uses: steinwurf/black-action/.github/workflows/action.yml@2.0.0