--- pynac-pynac-0.7.27/ginac/container.h      2021-01-24 10:52:22.000000000 +0100
+++ pynac-pynac-0.7.27/ginac/container.h   2021-01-24 22:06:33.000000000 +0100
@@ -591,13 +591,11 @@
                ex result(thiscontainer(std::move(vp)));
                if (is_a<container<C> >(result))
                        return ex_to<basic>(result).subs_one_level(m, options);
-
-                       return result;
+               return result;
        } else {
                if (is_a<container<C> >(*this))
-                       return subs_one_level(m, options);
-
-                       return *this;
+                       return subs_one_level(m, options);
+               return *this;
        }
 }