  We evaluate the impact of one-loop electroweak corrections to the
spin-independent dark matter (DM) scattering cross-section with nucleons
($\sigma_{\rm SI}$), in models with a so-called blind spot for direct
detection, where the leading-order prediction for the relevant DM coupling to
the Higgs boson, and therefore $\sigma_{\rm SI}$, are vanishingly small.
Adopting a simple illustrative scenario in which the DM state results from the
mixing of electroweak singlet and doublet fermions, we compute the relevant
higher order corrections to the scalar effective operator contributions to
$\sigma_{\rm SI}$, stemming from both triangle and box diagrams involving the
SM and dark sector fields. It is observed that in a significant region of the
singlet-doublet model-space, the one-loop corrections ``unblind'' the
tree-level blind spots and lead to detectable SI scattering rates at future
multi-ton scale liquid Xenon experiments, with $\sigma_{\rm SI}$ reaching
values up to a few times $10^{-47} {~\rm cm}^2$, for a weak scale DM with
$\mathcal{O}(1)$ Yukawa couplings. Furthermore, we find that there always
exists a new SI blind spot at the next-to-leading order, which is
perturbatively shifted from the leading order one in the singlet-doublet mass
parameters. For comparison, we also present the tree-level spin-dependent
scattering cross-sections near the SI blind-spot region, that could lead to a
larger signal. Our results can be mapped to the blind-spot scenario for
bino-Higgsino DM in the MSSM, with other sfermions, the heavier Higgs boson,
and the wino decoupled.
