1 files changed, 1 insertions, 2 deletions
diff --git a/src/Math/Interpolation.cpp b/src/Math/Interpolation.cpp
index a1e6b69..d5b2564 100644
--- a/src/Math/Interpolation.cpp
+++ b/src/Math/Interpolation.cpp
@@ -1,5 +1,4 @@
 #include "Interpolation.hpp"
-#include <functional>
 #include "Common.hpp"
 
 namespace Math {
@@ -15,7 +14,7 @@ float bilinear_interpolation(Matrix<2, 2> val, GridCellBoundaries cell, Vector<2
     return linear_interpolation({r1, r2}, cell.y1, cell.y2, pos.y());
 }
 
-float trilinear_interpolation(Matrix<2, 2> val_front, Matrix<2, 2> val_back, CubeCellBoundaries cell, Vector<3> pos) {
+float trilinear_interpolation(Matrix<2, 2> val_front, Matrix<2, 2> val_back, const CubeCellBoundaries& cell, Vector<3> pos) {
     auto r1 = bilinear_interpolation(val_front, cell.grid_cell(), {pos.x(), pos.y()});
     auto r2 = bilinear_interpolation(val_back, cell.grid_cell(), {pos.x(), pos.y()});