diff --git a/.github/workflows/prhtmlgenerator.yml b/.github/workflows/prhtmlgenerator.yml
index 2ef4dfa8..1c34a101 100644
--- a/.github/workflows/prhtmlgenerator.yml
+++ b/.github/workflows/prhtmlgenerator.yml
@@ -19,7 +19,7 @@ jobs:
           repository: ${{github.event.pull_request.head.repo.full_name}}
       - name: Check out rss-bridge
         run: |
-          PR=${{github.event.number}};
+          export PR=${{github.event.number}};
           wget -O requirements.txt https://raw.githubusercontent.com/$GITHUB_REPOSITORY/${{ github.event.pull_request.base.ref }}/.github/prtester-requirements.txt;
           wget https://raw.githubusercontent.com/$GITHUB_REPOSITORY/${{ github.event.pull_request.base.ref }}/.github/prtester.py;
           wget https://patch-diff.githubusercontent.com/raw/$GITHUB_REPOSITORY/pull/$PR.patch;