diff --git a/Triangulation_2/include/CGAL/Triangulation_2/internal/In_domain.h b/Triangulation_2/include/CGAL/Triangulation_2/internal/In_domain.h
index b42bbbb1147..f46b2f423ef 100644
--- a/Triangulation_2/include/CGAL/Triangulation_2/internal/In_domain.h
+++ b/Triangulation_2/include/CGAL/Triangulation_2/internal/In_domain.h
@@ -50,7 +50,7 @@ get_in_domain_impl(FH fh)
 template <typename F, typename FH>
 inline
 std::enable_if_t<!Has_member_is_in_domain<F>::value, bool>
-get_in_domain_impl(FH fh)
+get_in_domain_impl(FH )
 {
   return false;
 }
diff --git a/Triangulation_2/include/CGAL/draw_constrained_triangulation_2.h b/Triangulation_2/include/CGAL/draw_constrained_triangulation_2.h
index 2916c0a025b..7bc3856bc9d 100644
--- a/Triangulation_2/include/CGAL/draw_constrained_triangulation_2.h
+++ b/Triangulation_2/include/CGAL/draw_constrained_triangulation_2.h
@@ -168,8 +168,8 @@ namespace CGAL {
 #define CGAL_T2_TYPE CGAL::Constrained_triangulation_2<Gt, Tds, Itag>
 
 template<class Gt, class Tds, class Itag, class InDomainPmap>
-void draw(const CGAL_T2_TYPE& at2,
-          InDomainPmap ipm)
+void draw(const CGAL_T2_TYPE& ,
+          InDomainPmap )
 {}
 #undef CGAL_T2_TYPE