diff --git a/nufi/cells.h b/nufi/cells.h
index 7e9e823..e820dc0 100644
--- a/nufi/cells.h
+++ b/nufi/cells.h
@@ -1,4 +1,4 @@
-#fndef CELLS_H
+#ifndef CELLS_H
 #define CELLS_H
 
 #include <array>
diff --git a/nufi/nufi_solver.h b/nufi/nufi_solver.h
index 17bf99d..04670af 100644
--- a/nufi/nufi_solver.h
+++ b/nufi/nufi_solver.h
@@ -42,7 +42,6 @@ public:
 
 private:
   unsigned int Nt = std::floor(Parameters::TMAX / Parameters::DT);
-  unsigned int Nx = Parameters::CALC_NX;
 
   double Lx = Parameters::LX;