diff --git a/include/core/Partition_One.hpp b/include/core/Partition_One.hpp
index c18fa6b696..293160837a 100644
--- a/include/core/Partition_One.hpp
+++ b/include/core/Partition_One.hpp
@@ -1,8 +1,6 @@
 #ifndef PARTITION_ONE_H
 #define PARTITION_ONE_H
 
-#ifdef NGEN_MPI_ACTIVE
-
 #include <iostream>
 #include <memory>
 #include <string>
@@ -36,5 +34,4 @@ class Partition_One {
         PartitionData partition_data;       
 };
 
-#endif // NGEN_MPI_ACTIVE
 #endif // PARTITION_ONE_H
diff --git a/test/utils/Partition_One_Test.cpp b/test/utils/Partition_One_Test.cpp
index c708858157..2e3e1f747a 100644
--- a/test/utils/Partition_One_Test.cpp
+++ b/test/utils/Partition_One_Test.cpp
@@ -6,8 +6,6 @@
 #include <boost/lexical_cast.hpp>
 #include <vector>
 
-//This way we can test the partition_one, since this doesn't have an explicit MPI dependency
-#define NGEN_MPI_ACTIVE
 #include "core/Partition_One.hpp"
 #include "FileChecker.h"
 
@@ -190,5 +188,3 @@ TEST_F(PartitionOneTest, TestPartitionData_1b)
     ASSERT_EQ(nexus_ids.size(), num_nexus);
     ASSERT_EQ(duplicates.size(), 0);
 }
-
-#undef NGEN_MPI_ACTIVE