diff --git a/nifty5/__init__.py b/nifty5/__init__.py
index fd2964c0f0c56387e2de6357c61faacdd74058fd..871a1a10da93d64ff4479c08fe3bcb87ba0675cd 100644
--- a/nifty5/__init__.py
+++ b/nifty5/__init__.py
@@ -80,6 +80,7 @@ from .library.gaussian_energy import GaussianEnergy
 from .library.los_response import LOSResponse
 from .library.point_sources import PointSources
 from .library.poissonian_energy import PoissonianEnergy
+from .library.wiener_filter_curvature import WienerFilterCurvature
 from .library.correlated_fields import (make_correlated_field,
                                         make_mf_correlated_field)
 from .library.bernoulli_energy import BernoulliEnergy