The holonomy correction is one of the main terms arising when implementing
loop quantum gravity ideas at an effective level in cosmology. The recent
construction of an anomaly free algebra has shown that the formalism used, up
to now, to derive the primordial spectrum of fluctuations was not correct. This
article aims at computing the tensor spectrum in a fully consistent way within
this deformed and closed algebra.Comment: 5 pages, 6 figures, accepted by Phys. Rev.