diff --git a/python/dune/perftool/blockstructured/spaces.py b/python/dune/perftool/blockstructured/spaces.py
index 40a764db2d4d4c9d71bff3b2e22af0b0e3d9c593..3991050bad79d787d21c52a35c83e6f550faf939 100644
--- a/python/dune/perftool/blockstructured/spaces.py
+++ b/python/dune/perftool/blockstructured/spaces.py
@@ -4,7 +4,6 @@ from dune.perftool.pdelab.geometry import world_dimension
 from dune.perftool.pdelab.spaces import name_leaf_lfs
 
 
-@backend(interface="lfs_inames", name="blockstructured")
 def lfs_inames(element, restriction, count=None, context=''):
     assert not ((context == '') and (count is None))
     if count is not None:
diff --git a/python/dune/perftool/pdelab/spaces.py b/python/dune/perftool/pdelab/spaces.py
index e698d68ca7323edb7738122d467663cb1c66b666..791a4ccff5370141036cc60c809a2ba05d719c3c 100644
--- a/python/dune/perftool/pdelab/spaces.py
+++ b/python/dune/perftool/pdelab/spaces.py
@@ -218,7 +218,6 @@ def lfs_iname(element, restriction, count=None, context=''):
     return _lfs_iname(element, restriction, context)
 
 
-@backend(interface="lfs_inames")
 def lfs_inames(element, restriction, count=None, context=''):
     return (lfs_iname(element, restriction, count, context),)