"All what we know from the media, as we have not still been notified officially, is that the Slovenians have requested some amendments. We do not agree to amendments," Sanader said in Zagreb after a conference of Croatian exporters.
He reiterated that Rehn's latest proposal was presented as "take it or leave it".
Croatia accepted Rehn's proposal earlier this month, and later Slovenia forwarded its amendments to the text.
Minister Jandrokovic said that Croatia would not accept any changes or amendments to the document.
After meeting the Hungarian ambassador in Zagreb, Peter Imre Gyorkos, Jandrokovic said that Rehn's latest proposal was a final proposal and that for Croatia it was unacceptable to consider any changes of the text.
Jandrokovic recalled that the border dispute had been lasting for several months and that six or seven rounds of negotiations had been held and that Croatia had show its good will.
The latest proposal by Rehn has been backed also by the European presidential troika: France, the Czech Republic and Sweden, as well as all foreign ministers of EU member-states, according to Jandrokovic who, just like Sanader, expected the lifting of Slovenia's blockade of Croatia's EU membership talks very soon.
Jandrokovic also expects a new round of talks with Slovenia and EU officials this week.