diff --git a/.github/workflows/geneva_metrics.yml b/.github/workflows/geneva_metrics.yml
index 039c0b9d4..ab9cf693b 100644
--- a/.github/workflows/geneva_metrics.yml
+++ b/.github/workflows/geneva_metrics.yml
@@ -44,5 +44,5 @@ jobs:
           cd "$GITHUB_WORKSPACE/otel_cpp_contrib/exporters/geneva/build"
           cmake .. "-DCMAKE_PREFIX_PATH=$HOME/prebuilt-otel" \
             -DBUILD_TESTING=ON -DWITH_EXAMPLES=ON
-          cmake --build . -j${nproc}
+          cmake --build . -j$(nproc)
           ctest