diff --git a/apps/gpu/LBM/SphereRefined/SphereRefined.cpp b/apps/gpu/LBM/SphereRefined/SphereRefined.cpp
index cd68d57d5fb9d4d3a954159f1a8d9e3d775a8522..191d81e0707f35e413a84d2184aa6f51c7a1a58a 100644
--- a/apps/gpu/LBM/SphereRefined/SphereRefined.cpp
+++ b/apps/gpu/LBM/SphereRefined/SphereRefined.cpp
@@ -124,11 +124,11 @@ int main()
         scalingFactory.setScalingFactory(GridScalingFactory::GridScaling::ScaleCompressible);
 
         // use primitive
-        // auto sphere = std::make_shared<Sphere>(0.0, 0.0, 0.0, dSphere / 2.0);
+        auto sphere = std::make_shared<Sphere>(0.0, 0.0, 0.0, dSphere / 2.0);
 
         // use stl
-        std::string stlPath = "C:\\Users\\schoen\\Desktop\\git\\VirtualFluids_dev_rz\\apps\\gpu\\LBM\\SphereRefined\\sphere02.stl";
-        auto sphere = std::make_shared<TriangularMesh>(stlPath);
+        //std::string stlPath = "C:\\Users\\schoen\\Desktop\\git\\VirtualFluids_dev_rz\\apps\\gpu\\LBM\\SphereRefined\\sphere02.stl";
+        //auto sphere = std::make_shared<TriangularMesh>(stlPath);
         gridBuilder->addGeometry(sphere);
 
         gridBuilder->setPeriodicBoundaryCondition(false, false, false);