diff --git a/unsupported/test/mpreal_support.cpp b/unsupported/test/mpreal_support.cpp
index 0de546a9e..bc00382be 100644
--- a/unsupported/test/mpreal_support.cpp
+++ b/unsupported/test/mpreal_support.cpp
@@ -45,8 +45,7 @@ void test_mpreal_support()
     // symmetric eigenvalues
     SelfAdjointEigenSolver<MatrixXmp> eig(S);
     VERIFY_IS_EQUAL(eig.info(), Success);
-    VERIFY_IS_APPROX((S.selfadjointView<Lower>() * eig.eigenvectors()),
-                      eig.eigenvectors() * eig.eigenvalues().asDiagonal());
+    VERIFY( (S.selfadjointView<Lower>() * eig.eigenvectors()).isApprox(eig.eigenvectors() * eig.eigenvalues().asDiagonal(), NumTraits<mpreal>::dummy_precision()*1e3) );
   }
   
   {