diff --git a/python/dune/codegen/pdelab/tensors.py b/python/dune/codegen/pdelab/tensors.py
index 3a8c377bc8b27565a1054d12e4abfcaffc54a83a..6c6c55911675d4e0871697c7010b4ef986d62bdb 100644
--- a/python/dune/codegen/pdelab/tensors.py
+++ b/python/dune/codegen/pdelab/tensors.py
@@ -1,9 +1,7 @@
 """ Code generation for explicitly specified tensors """
 
 from dune.codegen.generation import (get_counted_variable,
-                                     domain,
                                      kernel_cached,
-                                     iname,
                                      instruction,
                                      temporary_variable,
                                      )
@@ -12,7 +10,6 @@ from dune.codegen.loopy.symbolic import FusedMultiplySub as FMS
 from loopy.match import Writes
 
 import pymbolic.primitives as prim
-import numpy as np
 import loopy as lp
 import itertools as it
 
@@ -119,7 +116,7 @@ def name_determinant_inverse(matrix, shape, visitor):
 
 
 def name_matrix_inverse(name, shape, visitor):
-    name_inv =  name + "_inv"
+    name_inv = name + "_inv"
 
     define_matrix_inverse(name, name_inv, shape, visitor)