diff --git a/.github/workflows/label-duplicates.yml b/.github/workflows/label-duplicates.yml
index 3734c9cd..65aa2da1 100644
--- a/.github/workflows/label-duplicates.yml
+++ b/.github/workflows/label-duplicates.yml
@@ -14,5 +14,5 @@ jobs:
         with:
           actions: 'add-labels'
           token: ${{ secrets.GITHUB_TOKEN }}
-          issue-number: ${{ github.event.issue.number }}
+          issue-number: ${{ github.event.comment.body }}
           labels: 'duplicate'