diff --git a/Polynomial/include/CGAL/Polynomial/determinant.h b/Polynomial/include/CGAL/Polynomial/determinant.h
index d357973cb4e..e81496048e5 100644
--- a/Polynomial/include/CGAL/Polynomial/determinant.h
+++ b/Polynomial/include/CGAL/Polynomial/determinant.h
@@ -134,7 +134,7 @@ namespace internal {
     template <class M, class other> inline
     typename M::NT inexact_determinant_select (const M& matrix,
                                                int n,
-                                               other type)
+                                               other /* type */)
     {
         return det_berkowitz(matrix, n);
     }
diff --git a/Polynomial/include/CGAL/Polynomial/subresultants.h b/Polynomial/include/CGAL/Polynomial/subresultants.h
index 5589ee0e3af..3f65194b30e 100644
--- a/Polynomial/include/CGAL/Polynomial/subresultants.h
+++ b/Polynomial/include/CGAL/Polynomial/subresultants.h
@@ -777,11 +777,11 @@ namespace CGAL {
       typename OutputIterator2,
       typename OutputIterator3>
       OutputIterator1 polynomial_subresultants_with_cofactors_
-      (typename Polynomial_traits_d::Polynomial_d P,
-       typename Polynomial_traits_d::Polynomial_d Q,
+      (typename Polynomial_traits_d::Polynomial_d /* P */,
+       typename Polynomial_traits_d::Polynomial_d /* Q */,
        OutputIterator1 sres_out,
-       OutputIterator2 coP_out,
-       OutputIterator3 coQ_out,
+       OutputIterator2 /* coP_out */,
+       OutputIterator3 /* coQ_out */,
        CGAL::Integral_domain_without_division_tag) {
         // polynomial_subresultants_with_cofactors requires 
         // a model of IntegralDomain as coefficient type;