diff --git a/.github/workflows/pr-cleanup.yaml b/.github/workflows/pr-cleanup.yaml
index 88f522204a6fe..f3ec9474b136d 100644
--- a/.github/workflows/pr-cleanup.yaml
+++ b/.github/workflows/pr-cleanup.yaml
@@ -18,7 +18,7 @@ jobs:
       - name: Get PR number
         id: pr_number
         run: |
-          if [ -z "${{ github.event.pull_request.number }}" ]; then
+          if [ -n "${{ github.event.pull_request.number }}" ]; then
             echo "PR_NUMBER=${{ github.event.pull_request.number }}" >> $GITHUB_OUTPUT
           else
             echo "PR_NUMBER=${{ github.event.inputs.pr_number }}" >> $GITHUB_OUTPUT