diff --git a/ortools/constraint_solver/csharp/constraint_solver.i b/ortools/constraint_solver/csharp/constraint_solver.i
index 3eed3a940c1..e9da28f6021 100644
--- a/ortools/constraint_solver/csharp/constraint_solver.i
+++ b/ortools/constraint_solver/csharp/constraint_solver.i
@@ -28,7 +28,7 @@ using System.Collections.Generic;
 %include "std_string.i"
 
 %include "ortools/base/base.i"
-%import "ortools/util/csharp/vector.i"
+%include "ortools/util/csharp/vector.i"
 %include "ortools/util/csharp/proto.i"
 
 // We need to forward-declare the proto here, so that PROTO_INPUT involving it
@@ -125,6 +125,18 @@ PROTECT_FROM_FAILURE(Solver::Fail(), arg1);
 
 // ############ END DUPLICATED CODE BLOCK ############
 
+%template(IntVector) std::vector<int>;
+%template(IntVectorVector) std::vector<std::vector<int> >;
+VECTOR_AS_CSHARP_ARRAY(int, int, int, IntVector);
+JAGGED_MATRIX_AS_CSHARP_ARRAY(int, int, int, IntVectorVector);
+//REGULAR_MATRIX_AS_CSHARP_ARRAY(int, int, int, IntVectorVector);
+
+%template(Int64Vector) std::vector<int64_t>;
+%template(Int64VectorVector) std::vector<std::vector<int64_t> >;
+VECTOR_AS_CSHARP_ARRAY(int64_t, int64_t, long, Int64Vector);
+JAGGED_MATRIX_AS_CSHARP_ARRAY(int64_t, int64_t, long, Int64VectorVector);
+//REGULAR_MATRIX_AS_CSHARP_ARRAY(int64_t, int64_t, long, Int64VectorVector);
+
 %apply int64_t * INOUT { int64_t * marker };
 %apply int64_t * OUTPUT { int64_t *l, int64_t *u, int64_t *value };
 
@@ -226,19 +238,6 @@ DEFINE_ARGS_TO_R_CALLBACK(
 #undef DEFINE_ARGS_TO_R_CALLBACK
 #undef DEFINE_VOID_TO_STRING_CALLBACK
 
-%template(IntVector) std::vector<int>;
-%template(IntVectorVector) std::vector<std::vector<int> >;
-VECTOR_AS_CSHARP_ARRAY(int, int, int, IntVector);
-JAGGED_MATRIX_AS_CSHARP_ARRAY(int, int, int, IntVectorVector);
-//REGULAR_MATRIX_AS_CSHARP_ARRAY(int, int, int, IntVectorVector);
-
-%template(Int64Vector) std::vector<int64_t>;
-%template(Int64VectorVector) std::vector<std::vector<int64_t> >;
-VECTOR_AS_CSHARP_ARRAY(int64_t, int64_t, long, Int64Vector);
-JAGGED_MATRIX_AS_CSHARP_ARRAY(int64_t, int64_t, long, Int64VectorVector);
-//REGULAR_MATRIX_AS_CSHARP_ARRAY(int64_t, int64_t, long, Int64VectorVector);
-
-
 // RENAMING
 namespace operations_research {