diff --git a/nufi_solver.hpp b/nufi_solver.hpp
index e3502b5..036bfe2 100644
--- a/nufi_solver.hpp
+++ b/nufi_solver.hpp
@@ -184,13 +184,35 @@ inline void NuFISolver::run()
       std::cout << "Timestep " << it << " / " << Nt << std::endl << std::endl;
 
       // compute rho
-    	for(size_t i = 0; i<Nx; i++)
+
+      double dx = Parameters::SPLINE_DX;
+      double x = Parameters::X_DOMAIN_LEFT;
+
+    	for(size_t i = 0; i<Nx; i++, x+=dx)
     	{
-        double ith_rho = eval_rho(it, i, coeffs.get(), Parameters::NV); 
+        double ith_rho = eval_rho(it, x, coeffs.get(), Parameters::NV); 
         AssertThrow(std::isfinite(ith_rho), ExcMessage("NaN detected in rho"));
     		rho.get()[i] =  ith_rho;
     	}
 
+      // bool rho_written = false;
+      //
+      // if (!rho_written)
+      // {
+      //     std::ofstream rho_file("rho_initial.dat");
+      //
+      //     if (!rho_file)
+      //         throw std::runtime_error("Could not open rho_initial.dat");
+      //
+      //     rho_file.precision(16);
+      //     rho_file << std::scientific;
+      //
+      //     for (size_t i = 0; i < Nx; ++i)
+      //         rho_file << rho.get()[i] << "\n";
+      //
+      //     rho_written = true;
+      // }
+
       poisson.set_rhs_function(std::make_unique<ChargeDensity_NuFI<1>>(rho.get(), Parameters::SPLINE_NX));
       poisson.solve_step();
 
diff --git a/rho_initial.dat b/rho_initial.dat
new file mode 100644
index 0000000..ef33aa9
--- /dev/null
+++ b/rho_initial.dat
@@ -0,0 +1,512 @@
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