Nicki Minaj blames US stores for her album's poor sales.

The 'Starships' hitmaker brought out 'Pink Friday: Roman Reloaded - The Re-Up' - a box set reissue of her second record, 'Pink Friday: Roman Reloaded' - earlier this month but it has failed to sell as well as expected and she believes it is because some major shops refused to stock the album.

She told radio station Power 105.1: ''It's hard to get the album because the stores basically said that the last few re-releases they had put out did not do well and they didn't want to take a chance.

''So Target and Walmart are not selling the album. And Target is actually my biggest retailer.

''They've sold the most Nicki Minaj albums ever; thank you Target, but I wish you could have sold this one ... it kind of sets you up to fail.''

However, Nicki insisted she was just pleased to be able to release an album to keep her fans happy while they wait for her to bring out new music.

She said: ''At the end of the day I'm happy that I was able to put the music out.

''The real reason for me to put out 'The Re-Up' is because I wanted to have a bridge between this time and the third album. I wanted people to have music that I really stand by.''