The Confederation of African Football (CAF) has shifted the matches scheduled to hold in Ebebiyin and Mongomo in Equatorial Guinea to Bata and Malabo, after the group-stage matches left the pitches damaged beyond use.
The tournament officials confirmed the two venue switches on Tuesday and said that all Africa Cup of Nations quarter-final ties will take place in Bata and Malabo.
Originally, the last-eight showdown between Tunisia and hosts Equatorial Guinea was scheduled to take place in Ebebiyin on Saturday.
Similar problems occurred in Mongomo where a quarter-final match was originally slated to take place on Sunday, but that will now be held in the capital Malabo.
That match will kick off at 16:00, which means the remaining quarter-final, also taking place in Malabo, has been pushed back to start at 19:30.
Consequently, the CAF Executive Committee feels that the eight teams qualified for the quarter-final stages onwards should be given the opportunity to play on grounds that provide the highest standards, specifically those of Bata and Malabo, to ensure the quality of play remained at the highest possible level.
There have already been instances of overcrowding at matches earlier in the tournament and police being overrun by supporters.
Moving the match to Bata Stadium, which will also host the final on 8 February, means an extra 30,000 fans will be able to attend.
Report also has it that it is the first time in the history of the Nations Cup that quarter-finals matches have been relocated, but the logistics of holding the tournament in Equatorial Guinea at short notice have presented unique problems.