diff --git a/src/ansys/visor/viewer/utils/autosetup.py b/src/ansys/visor/viewer/utils/autosetup.py
index d05f599b..d17f3667 100644
--- a/src/ansys/visor/viewer/utils/autosetup.py
+++ b/src/ansys/visor/viewer/utils/autosetup.py
@@ -42,7 +42,7 @@ def copy_wasm(src: Path, dst: Path) -> None:
 
     if sys.platform == "win32":
         site_packages = project_root / ".venv" / "Lib" / "site-packages"
-    elif sys.platform == "linux":
+    elif sys.platform in ["darwin", "linux"]:
         site_packages = Path(site.getsitepackages()[0])
     else:
         raise RuntimeError(f"Unsupported platform: {sys.platform}")
diff --git a/tests/unit/utils/test_autosetup.py b/tests/unit/utils/test_autosetup.py
index 576628d4..d68ef4c5 100644
--- a/tests/unit/utils/test_autosetup.py
+++ b/tests/unit/utils/test_autosetup.py
@@ -65,7 +65,7 @@ def test_prepare_wasm_assets_unsupported_platform(monkeypatch, tmp_path):
     """Ensure unsupported platforms raise RuntimeError."""
     _setup_common_mocks(monkeypatch)
 
-    monkeypatch.setattr(f"{MODULE}.sys.platform", "darwin")
+    monkeypatch.setattr(f"{MODULE}.sys.platform", "dummy")
 
     with pytest.raises(RuntimeError):
         prepare_wasm_assets(tmp_path)