1 files changed, 2 insertions, 2 deletions
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h b/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
index 3607fe3fe..1441943c3 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
@@ -12,8 +12,8 @@
 
 namespace Eigen {
 
-template<typename Scalar_, std::size_t NumIndices_, int Options_ = 0> class Tensor;
-template<typename Scalar_, typename Dimensions, int Options_ = 0> class TensorFixedSize;
+template<typename Scalar_, std::size_t NumIndices_, int Options_ = 0, typename IndexType = DenseIndex> class Tensor;
+template<typename Scalar_, typename Dimensions, int Options_ = 0, typename IndexType = DenseIndex> class TensorFixedSize;
 template<typename PlainObjectType, int Options_ = Unaligned> class TensorMap;
 template<typename PlainObjectType> class TensorRef;
 template<typename Derived, int AccessLevel = internal::accessors_level<Derived>::value> class TensorBase;