diff --git a/Algebraic_kernel_d/include/CGAL/Algebraic_kernel_d/Bitstream_descartes_E08_tree.h b/Algebraic_kernel_d/include/CGAL/Algebraic_kernel_d/Bitstream_descartes_E08_tree.h
index 2f7719bb362..4e28b86ed6d 100644
--- a/Algebraic_kernel_d/include/CGAL/Algebraic_kernel_d/Bitstream_descartes_E08_tree.h
+++ b/Algebraic_kernel_d/include/CGAL/Algebraic_kernel_d/Bitstream_descartes_E08_tree.h
@@ -303,7 +303,7 @@ public:
             Integer alpha_num = Integer(1), int log_denom = 1
     ) : alpha_num_(alpha_num),
         beta_num_((Integer(1) << log_denom) - alpha_num),
-        half_((log_denom > 0) ? (Integer(1) << log_denom-1) : 0),
+        half_((log_denom > 0) ? Integer(Integer(1) << log_denom-1) : 0),
         log_denom_(log_denom)
     {
         CGAL_precondition(log_denom_ >= 0);
diff --git a/Algebraic_kernel_d/include/CGAL/Algebraic_kernel_d/bound_between_1.h b/Algebraic_kernel_d/include/CGAL/Algebraic_kernel_d/bound_between_1.h
index ade0be4a1a5..aaf9185350f 100644
--- a/Algebraic_kernel_d/include/CGAL/Algebraic_kernel_d/bound_between_1.h
+++ b/Algebraic_kernel_d/include/CGAL/Algebraic_kernel_d/bound_between_1.h
@@ -220,7 +220,7 @@ simple_bound_between(const Algebraic_real& a,
             final_mantissa = final_mantissa << 1;
             final_mantissa++;
             y_log--;
-            x_m = x_m==0 ? 0 : x_m & ((Integer(1) << x_log) - 1); //x_m - CGAL::ipower(Integer(2),x_log);
+            x_m = x_m==0 ? 0 : Integer(x_m & ((Integer(1) << x_log) - 1)); //x_m - CGAL::ipower(Integer(2),x_log);
             x_log = x_m==0 ? -1 : CGAL::internal::floor_log2_abs(x_m);
         }
         final_mantissa = final_mantissa << 1;