diff --git a/.github/workflows/check_pr_branch.yml b/.github/workflows/check_pr_branch.yml
index a4676479a3..0ec56975e8 100644
--- a/.github/workflows/check_pr_branch.yml
+++ b/.github/workflows/check_pr_branch.yml
@@ -7,7 +7,7 @@ jobs:
     steps:
       - name: PRs should not target main
         run: |
-          if [[ "${{ github.event.pull_request_target.ref }}" == "main" ]]; then
+          if [[ "${{ github.event.pull_request_target }}" == "main" ]]; then
             echo "Pull requests must not be made against main. Please target development instead."
             exit 1
           fi