diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 38fd82ba..6f7df0f1 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -48,9 +48,10 @@ jobs:
         coverage combine
         coverage xml
     - name: Upload coverage to Codecov
+      if: github.repository == 'robotools/fontparts'
       uses: codecov/codecov-action@v5
       with:
-        file: coverage.xml
+        files: coverage.xml
         flags: unittests
         name: codecov-umbrella
         fail_ci_if_error: true