diff --git a/unsupported/Eigen/MPRealSupport b/unsupported/Eigen/MPRealSupport
index 974137a4c..30e8d66e4 100644
--- a/unsupported/Eigen/MPRealSupport
+++ b/unsupported/Eigen/MPRealSupport
@@ -45,6 +45,8 @@ namespace Eigen {
     * via the <a href="http://www.holoborodko.com/pavel/mpfr">MPFR C++</a>
     * library which itself is built upon <a href="http://www.mpfr.org/">MPFR</a>/<a href="http://gmplib.org/">GMP</a>.
     *
+    * You can find a copy of MPFR C++ that is known to be compatible in the unsupported/test/mpreal folder.
+    *
     * Here is an example:
     *
 \code
@@ -148,7 +150,7 @@ int main()
 
   inline bool isApprox(const mpfr::mpreal& a, const mpfr::mpreal& b, const mpfr::mpreal& prec)
   {
-  return mpfr::abs(a - b) <= (mpfr::min)(mpfr::abs(a), mpfr::abs(b)) * prec;
+    return mpfr::abs(a - b) <= (mpfr::min)(mpfr::abs(a), mpfr::abs(b)) * prec;
   }
 
   inline bool isApproxOrLessThan(const mpfr::mpreal& a, const mpfr::mpreal& b, const mpfr::mpreal& prec)
diff --git a/unsupported/test/CMakeLists.txt b/unsupported/test/CMakeLists.txt
index a14b57cb9..cd50c48e1 100644
--- a/unsupported/test/CMakeLists.txt
+++ b/unsupported/test/CMakeLists.txt
@@ -82,7 +82,7 @@ ei_add_test(FFT)
 find_package(MPFR 2.3.0)
 find_package(GMP)
 if(MPFR_FOUND)
-  include_directories(${MPFR_INCLUDES})
+  include_directories(${MPFR_INCLUDES} ./mpreal)
   ei_add_property(EIGEN_TESTED_BACKENDS "MPFR C++, ")
   set(EIGEN_MPFR_TEST_LIBRARIES ${MPFR_LIBRARIES} ${GMP_LIBRARIES})
   ei_add_test(mpreal_support "" "${EIGEN_MPFR_TEST_LIBRARIES}" )
diff --git a/unsupported/test/dlmalloc.c b/unsupported/test/mpreal/dlmalloc.c
similarity index 100%
rename from unsupported/test/dlmalloc.c
rename to unsupported/test/mpreal/dlmalloc.c
diff --git a/unsupported/test/dlmalloc.h b/unsupported/test/mpreal/dlmalloc.h
similarity index 100%
rename from unsupported/test/dlmalloc.h
rename to unsupported/test/mpreal/dlmalloc.h
diff --git a/unsupported/test/mpreal.cpp b/unsupported/test/mpreal/mpreal.cpp
similarity index 100%
rename from unsupported/test/mpreal.cpp
rename to unsupported/test/mpreal/mpreal.cpp
diff --git a/unsupported/test/mpreal.h b/unsupported/test/mpreal/mpreal.h
similarity index 100%
rename from unsupported/test/mpreal.h
rename to unsupported/test/mpreal/mpreal.h
diff --git a/unsupported/test/mpreal_support.cpp b/unsupported/test/mpreal_support.cpp
index 080510a58..53d388821 100644
--- a/unsupported/test/mpreal_support.cpp
+++ b/unsupported/test/mpreal_support.cpp
@@ -42,6 +42,6 @@ void test_mpreal_support()
 }
 
 extern "C" {
-#include "dlmalloc.c"
+#include "mpreal/dlmalloc.c"
 }
-#include "mpreal.cpp"
+#include "mpreal/mpreal.cpp"