diff --git a/test/main.h b/test/main.h
index 2797e8623..e5f1a9ad5 100644
--- a/test/main.h
+++ b/test/main.h
@@ -331,11 +331,13 @@ inline bool test_isApprox(const std::complex<double>& a, const std::complex<doub
 inline bool test_isMuchSmallerThan(const std::complex<double>& a, const std::complex<double>& b)
 { return internal::isMuchSmallerThan(a, b, test_precision<std::complex<double> >()); }
 
+#ifndef EIGEN_TEST_NO_LONGDOUBLE
 inline bool test_isApprox(const std::complex<long double>& a, const std::complex<long double>& b)
 { return internal::isApprox(a, b, test_precision<std::complex<long double> >()); }
 inline bool test_isMuchSmallerThan(const std::complex<long double>& a, const std::complex<long double>& b)
 { return internal::isMuchSmallerThan(a, b, test_precision<std::complex<long double> >()); }
 #endif
+#endif
 
 #ifndef EIGEN_TEST_NO_LONGDOUBLE
 inline bool test_isApprox(const long double& a, const long double& b)
diff --git a/unsupported/test/cxx11_tensor_argmax_cuda.cu b/unsupported/test/cxx11_tensor_argmax_cuda.cu
index 45311d4f7..41ccbe974 100644
--- a/unsupported/test/cxx11_tensor_argmax_cuda.cu
+++ b/unsupported/test/cxx11_tensor_argmax_cuda.cu
@@ -7,8 +7,8 @@
 // Public License v. 2.0. If a copy of the MPL was not distributed
 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-// TODO(mdevin): Free the cuda memory.
 
+#define EIGEN_TEST_NO_LONGDOUBLE
 #define EIGEN_TEST_FUNC cxx11_tensor_cuda
 #define EIGEN_USE_GPU