diff --git a/unsupported/test/cxx11_tensor_math.cpp b/unsupported/test/cxx11_tensor_math.cpp
index d247bebaa..61c742a16 100644
--- a/unsupported/test/cxx11_tensor_math.cpp
+++ b/unsupported/test/cxx11_tensor_math.cpp
@@ -16,7 +16,7 @@ using Eigen::RowMajor;
 
 static void test_tanh()
 {
-  Tensor<float, 1> vec1({6});
+  Tensor<float, 1> vec1(6);
   vec1.setRandom();
 
   Tensor<float, 1> vec2 = vec1.tanh();
@@ -28,7 +28,7 @@ static void test_tanh()
 
 static void test_sigmoid()
 {
-  Tensor<float, 1> vec1({6});
+  Tensor<float, 1> vec1(6);
   vec1.setRandom();
 
   Tensor<float, 1> vec2 = vec1.sigmoid();
diff --git a/unsupported/test/cxx11_tensor_mixed_indices.cpp b/unsupported/test/cxx11_tensor_mixed_indices.cpp
index 72f826216..4fba6fdd1 100644
--- a/unsupported/test/cxx11_tensor_mixed_indices.cpp
+++ b/unsupported/test/cxx11_tensor_mixed_indices.cpp
@@ -14,8 +14,8 @@
 
 static void test_simple()
 {
-  Tensor<float, 1, ColMajor> vec1({6});
-  Tensor<float, 1, ColMajor, int> vec2({6});
+  Tensor<float, 1, ColMajor> vec1(6);
+  Tensor<float, 1, ColMajor, int> vec2(6);
 
   vec1(0) = 4.0;  vec2(0) = 0.0;
   vec1(1) = 8.0;  vec2(1) = 1.0;