diff --git a/Number_types/include/CGAL/mpz_class.h b/Number_types/include/CGAL/mpz_class.h
index 24ceedd4fb7..dc229c02f50 100644
--- a/Number_types/include/CGAL/mpz_class.h
+++ b/Number_types/include/CGAL/mpz_class.h
@@ -313,6 +313,8 @@ public:
 
 } //namespace CGAL
 
+#include <CGAL/gmpxx.h>
+#include <CGAL/gmpxx_coercion_traits.h>
 #include <CGAL/Residue.h>
 #include <CGAL/Modular_traits.h>
 
@@ -362,7 +364,4 @@ struct Split_double<mpz_class>
 
 #undef CGAL_CHECK_GMP_EXPR
 
-#include <CGAL/gmpxx.h>
-#include <CGAL/gmpxx_coercion_traits.h>
-
 #endif // CGAL_MPZ_CLASS_H