diff --git a/HW10/MakePermutationMatrix.cpp b/HW10/MakePermutationMatrix.cpp
index 287dfa4..41e15a1 100644
--- a/HW10/MakePermutationMatrix.cpp
+++ b/HW10/MakePermutationMatrix.cpp
@@ -3,6 +3,7 @@
 //
 
 #include "MakePermutationMatrix.h"
+#include "mpi.h"
 #include <algorithm>
 #include <iostream>
 
diff --git a/HW10/MakePermutationMatrix.h b/HW10/MakePermutationMatrix.h
index b09ac76..969b713 100644
--- a/HW10/MakePermutationMatrix.h
+++ b/HW10/MakePermutationMatrix.h
@@ -6,7 +6,6 @@
 #define HW10_MAKEPERMUTATIONMATRIX_H
 
 #include "City.h"
-#include "mpi.h"
 #include <vector>
 class MakePermutationMatrix
 {