diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8a9c7322ea2..6fc130947b7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -186,6 +186,7 @@ jobs:
             --gcov-ignore-errors source_not_found \
             --gcov-ignore-errors output_error \
             --gcov-ignore-parse-errors suspicious_hits.warn \
+            --merge-mode-functions=separate \
             --print-summary \
             --lcov -o coverage-cpp.lcov || true