diff --git a/src/batch_evaluators/thread_bfe.cpp b/src/batch_evaluators/thread_bfe.cpp
index db31882..6ad7ae8 100644
--- a/src/batch_evaluators/thread_bfe.cpp
+++ b/src/batch_evaluators/thread_bfe.cpp
@@ -103,21 +103,12 @@ vector_double thread_bfe::operator()(problem p, const vector_double &dvs) const
             auto in_ptr = dvs.data() + begin * n_dim;
             auto out_ptr = retval.data() + begin * f_dim;
             std::copy(
-#if defined(_MSC_VER)
-                stdext::make_checked_array_iterator(in_ptr, n_dim),
-                stdext::make_checked_array_iterator(in_ptr, n_dim, n_dim), tmp_dv.begin()
-#else
                 in_ptr, in_ptr + n_dim, tmp_dv.begin()
-#endif
             );
             const auto fv = prob.fitness(tmp_dv);
             assert(fv.size() == f_dim);
             std::copy(
-#if defined(_MSC_VER)
-                fv.begin(), fv.end(), stdext::make_checked_array_iterator(out_ptr, f_dim)
-#else
                 fv.begin(), fv.end(), out_ptr
-#endif
             );
         }
     };
diff --git a/src/problems/translate.cpp b/src/problems/translate.cpp
index 2760872..9650708 100644
--- a/src/problems/translate.cpp
+++ b/src/problems/translate.cpp
@@ -129,15 +129,8 @@ vector_double translate::batch_fitness(const vector_double &xs) const
     using range_t = tbb::blocked_range<decltype(xs.size())>;
     tbb::parallel_for(range_t(0, n_dvs), [&xs, &xs_deshifted, nx, this](const range_t &range) {
         for (auto i = range.begin(); i != range.end(); ++i) {
-#if defined(_MSC_VER)
-            std::transform(stdext::make_unchecked_array_iterator(xs.data() + i * nx),
-                           stdext::make_unchecked_array_iterator(xs.data() + (i + 1u) * nx),
-                           stdext::make_unchecked_array_iterator(m_translation.data()),
-                           stdext::make_unchecked_array_iterator(xs_deshifted.data() + i * nx), std::minus<double>{});
-#else
                 std::transform(xs.data() + i * nx, xs.data() + (i + 1u) * nx, m_translation.data(),
                                xs_deshifted.data() + i * nx, std::minus<double>{});
-#endif
         }
     });