At the Community of Portuguese-speaking Countries Summit (including East Timor) in July 2004, the countries of Portugal (including East Timor) ratified the agreement and amended the text that advanced the reform in countries that had already ratified it and in the meantime accepted official spellings in other countries as legitimate; However, this should be done after an undefined transitional period. Over time, the Lisbon Academy of Sciences and the Brazilian Academy of Letters have made successive attempts to establish a common spelling between the two countries. The first agreement was reached in 1931; However, as the vocabulary published in 1940 (Portugal) and 1943 (Brazil) continued to contain some discrepancies, a new meeting took place, creating the 1945 spelling agreement. This agreement was adopted in Portugal by decree 35.288/45 law.  In Brazil, the 1945 convention was approved by Decree 8.286/45, but it was never ratified by the National Congress and repealed by Law 2.623/55, which brought Brazilians into compliance with the rules of the 1943 agreement. On 17 July 1998, a « protocol for amending the spelling agreement for the Portuguese language » was signed in Praia (Cape Verde), which removed the deadline from the original text, although it was necessary for all signatories to ratify the agreement before it came into force. Once again, only the dignitaries of Brazil, Portugal and Cape Verde approved this protocol. Vasco Graa Moura, a writer and former member of the European Parliament, the best known critic of the agreement, says that the second amendment protocol, like any other international convention, requires its implementation in each country only if it is ratified by all signatories, which has not yet been done. In other words, it is only when all countries ratify the treaty that they will be obliged to implement the amendments after ratification by three national members.
The rationality of a treaty that requires a country to adopt another treaty if approved by third countries is controversial. This argument of the alleged illegality of the 2004 ratification was questioned by lawyer and MEP Vital Moreira. In 1911, after the founding of the Portuguese Republic, a vast orthographic reform – the 1911 spelling reform – was adopted, which completely changed the face of the written language and brought it closer to the contemporary debate.