diff --git a/.github/workflows/test-runner-ci.yaml b/.github/workflows/test-runner-ci.yaml
index b8e9ae4e4..2c287bce3 100644
--- a/.github/workflows/test-runner-ci.yaml
+++ b/.github/workflows/test-runner-ci.yaml
@@ -81,6 +81,7 @@ jobs:
         python -m coverage combine --debug=pathmap
         python -m coverage xml --skip-empty
     - name: Comment on PR
+      if: ${{ github.event_name == 'pull_request_target' }}
       uses: orgoro/coverage@v3.1
       with:
         coverageFile: coverage.xml
diff --git a/tox.ini b/tox.ini
index 0a744034f..eec5baa23 100644
--- a/tox.ini
+++ b/tox.ini
@@ -37,8 +37,12 @@ exclude_lines =
     if __name__ == "__main__":
 omit = utest.py
 
-[coverage:combine]
-relative_paths = true
+[coverage:run]
+relative_files = true
+
+[coverage:paths]
+source =
+    test-runner/*
 
 [gh-actions]
 python =