diff --git a/unsupported/test/cxx11_tensor_of_strings.cpp b/unsupported/test/cxx11_tensor_of_strings.cpp
index 8d05d154e..4ef9aed91 100644
--- a/unsupported/test/cxx11_tensor_of_strings.cpp
+++ b/unsupported/test/cxx11_tensor_of_strings.cpp
@@ -94,9 +94,9 @@ static void test_slices()
     }
   }
 
-  const Eigen::DSizes<ptrdiff_t, 2> half_size{{2, 3}};
-  const Eigen::DSizes<ptrdiff_t, 2> first_half{{0, 0}};
-  const Eigen::DSizes<ptrdiff_t, 2> second_half{{0, 3}};
+  const Eigen::DSizes<ptrdiff_t, 2> half_size(2, 3);
+  const Eigen::DSizes<ptrdiff_t, 2> first_half(0, 0);
+  const Eigen::DSizes<ptrdiff_t, 2> second_half(0, 3);
 
   Tensor<std::string, 2> t1 = data.slice(first_half, half_size);
   Tensor<std::string, 2> t2 = data.slice(second_half, half_size);