diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index e58a1ab..4e6f146 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -111,7 +111,7 @@ jobs:
           RUSTDOCFLAGS: '-Zprofile -Ccodegen-units=1 -Cllvm-args=--inline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests'
       - run: mkdir ./target/debug/coverage
       - run: zip ./target/debug/coverage/files.zip ./target/debug/deps/dcaf-*.gcda ./target/debug/deps/dcaf-*.gcno
-      - run: grcov ./target/debug/coverage/files.zip -s . --service-name "Continuous Integration" --commit-sha ${GITHUB_SHA} -t lcov --branch --ignore-not-existing --ignore ../* --ignore */test_helper.rs -o ./target/debug/coverage/
+      - run: grcov ./target/debug/coverage/files.zip -s . --service-name "Continuous Integration" --commit-sha ${GITHUB_SHA} -t lcov --branch --ignore-not-existing --ignore "../*" --ignore "/*" --ignore "*/test_helper.rs" -o ./target/debug/coverage/
       - name: Coveralls upload
         uses: coverallsapp/github-action@main
         with: