diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorBlock.h b/unsupported/Eigen/CXX11/src/Tensor/TensorBlock.h
index 45ddfdb39..cbf91013b 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorBlock.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorBlock.h
@@ -60,7 +60,7 @@ struct cond<RowMajor> {
  *  - kSkewedInnerDims: 100 blocks of size 100x1 (or 1x100 depending on a column
  *                      or row major layout)
  */
-enum class TensorBlockShapeType {
+enum TensorBlockShapeType {
   kUniformAllDims,
   kSkewedInnerDims,
 };
@@ -152,11 +152,11 @@ struct TensorBlockCopyOp {
     const Scalar* src_base = &src_data[src_index];
     Scalar* dst_base = &dst_data[dst_index];
 
-    using Src = const Eigen::Array<Scalar, Dynamic, 1>;
-    using Dst = Eigen::Array<Scalar, Dynamic, 1>;
+    typedef const Eigen::Array<Scalar, Dynamic, 1> Src;
+    typedef Eigen::Array<Scalar, Dynamic, 1> Dst;
 
-    using SrcMap = Eigen::Map<Src, 0, InnerStride<>>;
-    using DstMap = Eigen::Map<Dst, 0, InnerStride<>>;
+    typedef Eigen::Map<Src, 0, InnerStride<>> SrcMap;
+    typedef Eigen::Map<Dst, 0, InnerStride<>> DstMap;
 
     const SrcMap src(src_base, num_coeff_to_copy, InnerStride<>(src_stride));
     DstMap dst(dst_base, num_coeff_to_copy, InnerStride<>(dst_stride));
@@ -401,13 +401,13 @@ struct TensorBlockCwiseBinaryOp {
       const StorageIndex left_stride, const LeftScalar* left_data,
       const StorageIndex right_index, const StorageIndex right_stride,
       const RightScalar* right_data) {
-    using Lhs = const Eigen::Array<LeftScalar, Dynamic, 1>;
-    using Rhs = const Eigen::Array<RightScalar, Dynamic, 1>;
-    using Out = Eigen::Array<OutputScalar, Dynamic, 1>;
+    typedef const Eigen::Array<LeftScalar, Dynamic, 1> Lhs;
+    typedef const Eigen::Array<RightScalar, Dynamic, 1> Rhs;
+    typedef Eigen::Array<OutputScalar, Dynamic, 1> Out;
 
-    using LhsMap = Eigen::Map<Lhs, 0, InnerStride<>>;
-    using RhsMap = Eigen::Map<Rhs, 0, InnerStride<>>;
-    using OutMap = Eigen::Map<Out, 0, InnerStride<>>;
+    typedef Eigen::Map<Lhs, 0, InnerStride<>> LhsMap;
+    typedef Eigen::Map<Rhs, 0, InnerStride<>> RhsMap;
+    typedef Eigen::Map<Out, 0, InnerStride<>> OutMap;
 
     const LeftScalar* lhs_base = &left_data[left_index];
     const RightScalar* rhs_base = &right_data[right_index];
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h b/unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h
index 17008917a..3f3b5685d 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h
@@ -36,7 +36,7 @@ template <typename Expression, typename Device, bool Vectorizable,
           bool Tileable>
 class TensorExecutor {
  public:
-  using StorageIndex = typename Expression::Index;
+  typedef typename Expression::Index StorageIndex;
 
   EIGEN_DEVICE_FUNC
   static EIGEN_STRONG_INLINE void run(const Expression& expr,
@@ -60,7 +60,7 @@ template <typename Expression>
 class TensorExecutor<Expression, DefaultDevice, /*Vectorizable*/ true,
                      /*Tileable*/ false> {
  public:
-  using StorageIndex = typename Expression::Index;
+  typedef typename Expression::Index StorageIndex;
 
   EIGEN_DEVICE_FUNC
   static EIGEN_STRONG_INLINE void run(const Expression& expr,
@@ -102,21 +102,19 @@ template <typename Expression, bool Vectorizable>
 class TensorExecutor<Expression, DefaultDevice, Vectorizable,
                      /*Tileable*/ true> {
  public:
-  using Scalar = typename traits<Expression>::Scalar;
-  using ScalarNoConst = typename remove_const<Scalar>::type;
+  typedef typename traits<Expression>::Scalar Scalar;
+  typedef typename remove_const<Scalar>::type ScalarNoConst;
 
-  using Evaluator = TensorEvaluator<Expression, DefaultDevice>;
-  using StorageIndex = typename traits<Expression>::Index;
+  typedef TensorEvaluator<Expression, DefaultDevice> Evaluator;
+  typedef typename traits<Expression>::Index StorageIndex;
 
   static const int NumDims = traits<Expression>::NumDimensions;
 
   EIGEN_DEVICE_FUNC
   static EIGEN_STRONG_INLINE void run(const Expression& expr,
                          const DefaultDevice& device = DefaultDevice()) {
-    using TensorBlock =
-        TensorBlock<ScalarNoConst, StorageIndex, NumDims, Evaluator::Layout>;
-    using TensorBlockMapper = TensorBlockMapper<ScalarNoConst, StorageIndex,
-                                                NumDims, Evaluator::Layout>;
+    typedef TensorBlock<ScalarNoConst, StorageIndex, NumDims, Evaluator::Layout> TensorBlock;
+    typedef TensorBlockMapper<ScalarNoConst, StorageIndex, NumDims, Evaluator::Layout> TensorBlockMapper;
 
     Evaluator evaluator(expr, device);
     Index total_size = array_prod(evaluator.dimensions());
@@ -221,7 +219,7 @@ struct EvalRange<Evaluator, StorageIndex, /*Vectorizable*/ true> {
 template <typename Expression, bool Vectorizable, bool Tileable>
 class TensorExecutor<Expression, ThreadPoolDevice, Vectorizable, Tileable> {
  public:
-  using StorageIndex = typename Expression::Index;
+  typedef typename Expression::Index StorageIndex;
 
   static EIGEN_STRONG_INLINE void run(const Expression& expr,
                          const ThreadPoolDevice& device) {
@@ -249,20 +247,18 @@ class TensorExecutor<Expression, ThreadPoolDevice, Vectorizable, Tileable> {
 template <typename Expression, bool Vectorizable>
 class TensorExecutor<Expression, ThreadPoolDevice, Vectorizable, /*Tileable*/ true> {
  public:
-  using Scalar = typename traits<Expression>::Scalar;
-  using ScalarNoConst = typename remove_const<Scalar>::type;
+  typedef typename traits<Expression>::Scalar Scalar;
+  typedef typename remove_const<Scalar>::type ScalarNoConst;
 
-  using Evaluator = TensorEvaluator<Expression, ThreadPoolDevice>;
-  using StorageIndex = typename traits<Expression>::Index;
+  typedef TensorEvaluator<Expression, ThreadPoolDevice> Evaluator;
+  typedef typename traits<Expression>::Index StorageIndex;
 
   static const int NumDims = traits<Expression>::NumDimensions;
 
   static EIGEN_STRONG_INLINE void run(const Expression& expr,
                          const ThreadPoolDevice& device) {
-    using TensorBlock =
-        TensorBlock<ScalarNoConst, StorageIndex, NumDims, Evaluator::Layout>;
-    using TensorBlockMapper =
-        TensorBlockMapper<ScalarNoConst, StorageIndex, NumDims, Evaluator::Layout>;
+    typedef TensorBlock<ScalarNoConst, StorageIndex, NumDims, Evaluator::Layout> TensorBlock;
+    typedef TensorBlockMapper<ScalarNoConst, StorageIndex, NumDims, Evaluator::Layout> TensorBlockMapper;
 
     Evaluator evaluator(expr, device);
     StorageIndex total_size = array_prod(evaluator.dimensions());