diff --git a/lib/potential/gkernel_sphere_mass_depth.cpp b/lib/potential/gkernel_sphere_mass_depth.cpp
index 8b6dc92..85e5e23 100644
--- a/lib/potential/gkernel_sphere_mass_depth.cpp
+++ b/lib/potential/gkernel_sphere_mass_depth.cpp
@@ -46,7 +46,7 @@ void gctl::gobser_wrt_mass_depth(double &depth_der, double &mass_der, const poin
     int i;
     int o_size = obsp.size();
 
-#pragma omp parallel for private (i, tmp_val, tmp_grad, tmp_obs, depth_mass, ders) schedule(guided)
+//#pragma omp parallel for private (i, tmp_val, tmp_grad, tmp_obs, depth_mass, ders) schedule(guided)
     for (i = 0; i < o_size; i++)
     {
         depth_mass.resize(2);
@@ -59,12 +59,12 @@ void gctl::gobser_wrt_mass_depth(double &depth_der, double &mass_der, const poin
         tmp_val = autodiff::val(tmp_obs);
         tmp_grad = lf.gradient(tmp_val, i);
 
-#pragma omp critical
-{
+//#pragma omp critical
+//{
         lf.evaluate(tmp_val, i);
         depth_der += tmp_grad*ders[0];
         mass_der += tmp_grad*ders[1];
-}
+//}
     }
 
     return;