diff --git a/src/interpolation/interpolation.hpp b/src/interpolation/interpolation.hpp
index b5c9258273a0a7b538994b094fff5a569c41a933..8fd0ca06827ae68409fa40374c3a055cb5355518 100644
--- a/src/interpolation/interpolation.hpp
+++ b/src/interpolation/interpolation.hpp
@@ -8,7 +8,7 @@
 #ifndef OPENFPM_NUMERICS_SRC_INTERPOLATION_INTERPOLATION_HPP_
 #define OPENFPM_NUMERICS_SRC_INTERPOLATION_INTERPOLATION_HPP_
 
-#include "NN/CellList/MemFast.hpp"
+#include "NN/Mem_type/MemFast.hpp"
 #include "NN/CellList/CellList.hpp"
 #include "Grid/grid_dist_key.hpp"