diff --git a/Kinetic_data_structures/include/CGAL/Polynomial/internal/Polynomial_impl.h b/Kinetic_data_structures/include/CGAL/Polynomial/internal/Polynomial_impl.h
index 746a18e3cbb..e47b5784ba1 100644
--- a/Kinetic_data_structures/include/CGAL/Polynomial/internal/Polynomial_impl.h
+++ b/Kinetic_data_structures/include/CGAL/Polynomial/internal/Polynomial_impl.h
@@ -338,7 +338,7 @@ public:
       NT coef;
       // eat
       in >> coef;
-      if (!in.good()) return;
+      if (in.fail()) return;
       unsigned int pow;
       char p= in.peek();
       if (in.peek() =='*') {