diff --git a/scripts/test b/scripts/test
index dd01dab6fb..19a67663b3 100755
--- a/scripts/test
+++ b/scripts/test
@@ -12,8 +12,14 @@ cd $(git rev-parse --show-toplevel)
 # Set env for pybind11 cmake
 export pybind11_DIR=$(python -m pybind11 --cmakedir)
 
+if [ $(uname) = "Darwin" ]; then
+    nproc=$(sysctl -n hw.ncpu)
+else
+    nproc=$(nproc)
+fi
+
 # Build the tests
-cmake --build build/libtiledbsc --target build_tests -j $(nproc)
+cmake --build build/libtiledbsc --target build_tests -j $nproc
 
 # Run unit tests
 cd build/libtiledbsc