diff --git a/Minkowski_sum_2/test/Minkowski_sum_2/test_minkowski_sum.cpp b/Minkowski_sum_2/test/Minkowski_sum_2/test_minkowski_sum.cpp
index 40d1e1ecb6c..64c03f85d3a 100644
--- a/Minkowski_sum_2/test/Minkowski_sum_2/test_minkowski_sum.cpp
+++ b/Minkowski_sum_2/test/Minkowski_sum_2/test_minkowski_sum.cpp
@@ -1,16 +1,5 @@
 #include <CGAL/basic.h>
 
-#ifdef CGAL_USE_GMP
-  // GMP is installed. Use the GMP rational number-type. 
-  #include <CGAL/Gmpq.h>
-  typedef CGAL::Gmpq Rational;
-#else
-  // GMP is not installed. Use CGAL's exact rational number-type.
-  #include <CGAL/MP_Float.h>
-  #include <CGAL/Quotient.h>
-  typedef CGAL::Quotient<CGAL::MP_Float> Rational;
-#endif
-
 #include <CGAL/minkowski_sum_2.h>
 #include <CGAL/Small_side_angle_bisector_decomposition_2.h>
 #include <CGAL/Polygon_convex_decomposition_2.h>