diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 6b1acf1bf1..ce7d1462d2 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -57,7 +57,7 @@ jobs:
       with:
         node-version: 10.15
     - run: npm install
-    - run: env:DEBUG='*'; npm run ctest 2>chromium-win-testrun.log
+    - run: set DEBUG=* & npm run ctest 2>chromium-win-testrun.log
     - uses: actions/upload-artifact@v1
       with:
         name: chromium-win-testrun.log