diff --git a/Principal_component_analysis/include/CGAL/linear_least_squares_fitting_rectangles_2.h b/Principal_component_analysis/include/CGAL/linear_least_squares_fitting_rectangles_2.h
index 579287ce003..8c37f5960bb 100644
--- a/Principal_component_analysis/include/CGAL/linear_least_squares_fitting_rectangles_2.h
+++ b/Principal_component_analysis/include/CGAL/linear_least_squares_fitting_rectangles_2.h
@@ -68,8 +68,8 @@ linear_least_squares_fitting_2(InputIterator first,
   typename DiagonalizeTraits::Covariance_matrix covariance = {{ 0., 0., 0. }};
 
   // assemble 2nd order moment about the origin.
-  FT temp[4] = {1/3.0, 0.25,
-                0.25,  1/3.0};
+  FT temp[4] = {FT(1/3.0), FT(0.25),
+                FT(0.25),  FT(1/3.0)};
   Matrix moment = init_matrix<FT>(2,temp);
 
   for(InputIterator it = first;
diff --git a/Principal_component_analysis/include/CGAL/linear_least_squares_fitting_triangles_2.h b/Principal_component_analysis/include/CGAL/linear_least_squares_fitting_triangles_2.h
index 3cd5d651b24..7d32f2bcdbd 100644
--- a/Principal_component_analysis/include/CGAL/linear_least_squares_fitting_triangles_2.h
+++ b/Principal_component_analysis/include/CGAL/linear_least_squares_fitting_triangles_2.h
@@ -68,8 +68,8 @@ linear_least_squares_fitting_2(InputIterator first,
   typename DiagonalizeTraits::Covariance_matrix covariance = {{ 0., 0., 0. }};
 
   // assemble the 2nd order moment about the origin.
-  FT temp[4] = {1/12.0, 1/24.0,
-                1/24.0, 1/12.0};
+  FT temp[4] = {FT(1/12.0), FT(1/24.0),
+                FT(1/24.0), FT(1/12.0)};
 
   Matrix moment = init_matrix<FT>(2,temp);