diff --git a/.github/workflows/scan-image.yml b/.github/workflows/scan-image.yml
index d9b8b08..3c27623 100644
--- a/.github/workflows/scan-image.yml
+++ b/.github/workflows/scan-image.yml
@@ -17,11 +17,11 @@ jobs:
 
       - name: Post a comment to the PR
         run: |
-          echo  ${{ github.repository }},${{ github.event.issue.pull_request.number }}
+          echo  ${{ github.repository }},${{ github.event.issue.number }}
           curl -X POST \
             -H "Authorization: token ${{ secrets.OWNER_TOKEN }}" \
             -H "Accept: application/vnd.github.v3+json" \
-            https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/comments \
+            https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.issue.number }}/comments \
             -d '{"body": "开始镜像扫描"}'
 
       - name: Check if comment has the specified prefix and run script