Klaus told EU President Sweden that he wants a footnote adding to the document before signing it.
Reinfeldt said "he wishes to add a footnote with two sentences. As far as I understand it, he's linking this to the (EU's) Charter of Fundamental Rights and then he wants the European Council to take a decision on this footnote,"
"I told him that this was the wrong message at the wrong time, that it is very late in the process," the Swedish leader said.
The Lisbon treaty has to be approved by all 27 EU member states in order to come into force, possibly next year, and time is running out, with the commission's mandate due to expire at the end of the month.