diff --git a/Packages/Apollonius_graph_2/doc_tex/Apollonius_graph_2_ref/Apollonius_graph_filtered_traits_2.tex b/Packages/Apollonius_graph_2/doc_tex/Apollonius_graph_2_ref/Apollonius_graph_filtered_traits_2.tex
index f2cf246ed1a..d295cf4b8a4 100644
--- a/Packages/Apollonius_graph_2/doc_tex/Apollonius_graph_2_ref/Apollonius_graph_filtered_traits_2.tex
+++ b/Packages/Apollonius_graph_2/doc_tex/Apollonius_graph_2_ref/Apollonius_graph_filtered_traits_2.tex
@@ -50,7 +50,7 @@ The default values for the template parameters are as follows:
 \ccc{CM = CGAL::Ring_tag},
 \ccc{EK = CGAL::Simple_cartesian<CGAL::MP_Float>},
 \ccc{EM = CM},
-\ccc{FK = CGAL::Simple_cartesian<CGAL::Interval_nt<true> >},
+\ccc{FK = CGAL::Simple_cartesian<CGAL::Interval_nt<false> >},
 \ccc{FM = CM}.
 
 
diff --git a/Packages/Apollonius_graph_2/doc_tex/basic/Apollonius_graph_2_ref/Apollonius_graph_filtered_traits_2.tex b/Packages/Apollonius_graph_2/doc_tex/basic/Apollonius_graph_2_ref/Apollonius_graph_filtered_traits_2.tex
index f2cf246ed1a..d295cf4b8a4 100644
--- a/Packages/Apollonius_graph_2/doc_tex/basic/Apollonius_graph_2_ref/Apollonius_graph_filtered_traits_2.tex
+++ b/Packages/Apollonius_graph_2/doc_tex/basic/Apollonius_graph_2_ref/Apollonius_graph_filtered_traits_2.tex
@@ -50,7 +50,7 @@ The default values for the template parameters are as follows:
 \ccc{CM = CGAL::Ring_tag},
 \ccc{EK = CGAL::Simple_cartesian<CGAL::MP_Float>},
 \ccc{EM = CM},
-\ccc{FK = CGAL::Simple_cartesian<CGAL::Interval_nt<true> >},
+\ccc{FK = CGAL::Simple_cartesian<CGAL::Interval_nt<false> >},
 \ccc{FM = CM}.
 
 
diff --git a/Packages/Apollonius_graph_2/include/CGAL/Apollonius_graph_filtered_traits_2.h b/Packages/Apollonius_graph_2/include/CGAL/Apollonius_graph_filtered_traits_2.h
index c5adcc051fa..e40bd85c76c 100644
--- a/Packages/Apollonius_graph_2/include/CGAL/Apollonius_graph_filtered_traits_2.h
+++ b/Packages/Apollonius_graph_2/include/CGAL/Apollonius_graph_filtered_traits_2.h
@@ -55,7 +55,7 @@ template<class CK_t,
 	 class CK_MTag = Ring_tag,
 	 class EK_t    = Simple_cartesian<MP_Float>,
 	 class EK_MTag = CK_MTag,
-	 class FK_t    = Simple_cartesian< Interval_nt<true> >,
+	 class FK_t    = Simple_cartesian< Interval_nt<false> >,
 	 class FK_MTag = CK_MTag,
 	 class C2E_t   = Cartesian_converter<CK_t, EK_t>,
 	 class C2F_t =