diff --git a/nifty5/library/amplitude_model.py b/nifty5/library/amplitude_model.py
index a85eace4292cd3dc9bc4e08045dc86148846352b..687d4be690b3993a652a26d8185becef44cf0ba2 100644
--- a/nifty5/library/amplitude_model.py
+++ b/nifty5/library/amplitude_model.py
@@ -1,8 +1,9 @@
 import numpy as np
 
-from ..domains import PowerSpace, UnstructuredDomain
+from ..domains.power_space import PowerSpace
+from ..domains.unstructured_domain import UnstructuredDomain
 from ..field import Field
-from ..multi import MultiField
+from ..multi.multi_field import MultiField
 from ..sugar import makeOp, sqrt
 
 
@@ -22,11 +23,11 @@ def make_amplitude_model(s_space, Npixdof, ceps_a, ceps_k, sm, sv, im, iv,
 
     Npixdof : #pix in dof_space
 
-    ceps_a, ceps_k0 : Smoothnessparameters in ceps_kernel
+    ceps_a, ceps_k0 : Smoothness parameters in ceps_kernel
                         eg. ceps_kernel(k) = (a/(1+(k/k0)**2))**2
                         a = ceps_a,  k0 = ceps_k0
 
-    sm, sv : slope_mean = expected exponent of powerlaw (e.g. -4),
+    sm, sv : slope_mean = expected exponent of power law (e.g. -4),
                 slope_variance (default=1)
 
     im, iv : y-intercept_mean, y-intercept_variance  of power_slope