diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index a77b33521..75ef7c65a 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -72,7 +72,7 @@ jobs:
         id: merge-commit
         uses: PrismLauncher/PrismLauncher/.github/actions/get-merge-commit@develop
         with:
-          pull-request-id: ${{ github.event.pull_request.id }}
+          pull-request-id: ${{ github.event.number }}
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}