The present invention relates to a kit and a method of linear amplification of a least one nucleic acid target in a sample, said method comprising: (a) contacting each target in the sample with a nucleic acid polymerase and a primer comprising a component preventing copying of the primer by the nucleic acid polymerase; and at least one nuclease blocking nucleotide; (b) generating a primer extension product; (c) preventing priming by the 3′-end of the primer extension product, and (d) repeating steps b) and c) at least once.