diff --git a/Eigen/src/Core/arch/CUDA/PacketMathHalf.h b/Eigen/src/Core/arch/CUDA/PacketMathHalf.h
index 138881996..15b784a95 100644
--- a/Eigen/src/Core/arch/CUDA/PacketMathHalf.h
+++ b/Eigen/src/Core/arch/CUDA/PacketMathHalf.h
@@ -239,8 +239,8 @@ template<> EIGEN_DEVICE_FUNC inline half predux<half2>(const half2& a) {
 
 template<> EIGEN_DEVICE_FUNC inline half predux_max<half2>(const half2& a) {
 #if __CUDA_ARCH__ >= 530
-  half first = __low2half(a);
-  half second = __high2half(a);
+  __half first = __low2half(a);
+  __half second = __high2half(a);
   return __hgt(first, second) ? first : second;
 #else
   float a1 = __low2float(a);
@@ -251,8 +251,8 @@ template<> EIGEN_DEVICE_FUNC inline half predux_max<half2>(const half2& a) {
 
 template<> EIGEN_DEVICE_FUNC inline half predux_min<half2>(const half2& a) {
 #if __CUDA_ARCH__ >= 530
-  half first = __low2half(a);
-  half second = __high2half(a);
+  __half first = __low2half(a);
+  __half second = __high2half(a);
   return __hlt(first, second) ? first : second;
 #else
   float a1 = __low2float(a);
diff --git a/unsupported/test/cxx11_tensor_of_float16_cuda.cu b/unsupported/test/cxx11_tensor_of_float16_cuda.cu
index 992bd7bd0..8223285ee 100644
--- a/unsupported/test/cxx11_tensor_of_float16_cuda.cu
+++ b/unsupported/test/cxx11_tensor_of_float16_cuda.cu
@@ -392,7 +392,7 @@ void test_cuda_forced_evals() {
   no_bcast[0] = 1;
 
   gpu_float.device(gpu_device) = gpu_float.random() - gpu_float.constant(0.5f);
-  gpu_res_float.device(gpu_device) = gpu_float.log();
+  gpu_res_float.device(gpu_device) = gpu_float.abs();
   gpu_res_half1.device(gpu_device) = gpu_float.cast<Eigen::half>().abs().eval().cast<float>();
   gpu_res_half2.device(gpu_device) = gpu_float.cast<Eigen::half>().abs().broadcast(no_bcast).eval().cast<float>();
 
@@ -405,7 +405,7 @@ void test_cuda_forced_evals() {
   gpu_device.synchronize();
 
   for (int i = 0; i < num_elem; ++i) {
-    std::cout << "Checking forced eval " << i << std::endl;
+    std::cout << "Checking forced eval " << i << full_prec(i) << " vs " << half_prec1(i) << " vs " << half_prec2(i) << std::endl;
     VERIFY_IS_APPROX(full_prec(i), half_prec1(i));
     VERIFY_IS_APPROX(full_prec(i), half_prec2(i));
   }