diff --git a/test/boostmultiprec.cpp b/test/boostmultiprec.cpp
index 7c79ded23..e83e97044 100644
--- a/test/boostmultiprec.cpp
+++ b/test/boostmultiprec.cpp
@@ -74,8 +74,7 @@
 #include <boost/math/special_functions.hpp>
 #include <boost/math/complex.hpp>
 
-namespace mp = boost::multiprecision;
-typedef mp::number<mp::cpp_dec_float<100>, mp::et_on> Real;
+typedef boost::multiprecision::number<boost::multiprecision::cpp_dec_float<100>, boost::multiprecision::et_on> Real;
 
 namespace Eigen {
   template<> struct NumTraits<Real> : GenericNumTraits<Real> {