diff --git a/odl/test/discr/discr_space_test.py b/odl/test/discr/discr_space_test.py
index 63190ce4c7c..e748a5f3e06 100644
--- a/odl/test/discr/discr_space_test.py
+++ b/odl/test/discr/discr_space_test.py
@@ -14,7 +14,7 @@
 import pytest
 
 import odl
-from odl.discr.discr_space import DiscretizedSpace, DiscretizedSpaceElement
+from odl.discr.discr_space import DiscretizedSpace
 from odl.space.base_tensors import TensorSpace
 from odl.util.testutils import all_almost_equal, all_equal, simple_fixture
 
diff --git a/odl/trafos/fourier.py b/odl/trafos/fourier.py
index 3e6ef72dc4f..5bf06936107 100644
--- a/odl/trafos/fourier.py
+++ b/odl/trafos/fourier.py
@@ -779,13 +779,13 @@ def __init__(self, inverse, domain, range=None, impl=None, **kwargs):
 
         Other Parameters
         ----------------
-        tmp_r : `DiscretizedSpaceElement` or `numpy.ndarray`, optional
+        tmp_r : `numpy.ndarray`, optional
             Temporary for calculations in the real space (domain of
             this transform). It is shared with the inverse.
 
             Variants using this: R2C, R2HC, C2R (inverse)
 
-        tmp_f : `DiscretizedSpaceElement` or `numpy.ndarray`, optional
+        tmp_f : `numpy.ndarray`, optional
             Temporary for calculations in the frequency (reciprocal)
             space. It is shared with the inverse.