diff --git a/python/dune/codegen/blockstructured/vectorization.py b/python/dune/codegen/blockstructured/vectorization.py
index 3461bf80a6ee54d1686b89658dcd30511093e146..22942d662f27e0921a042adb8edb92e46a5a5ffa 100644
--- a/python/dune/codegen/blockstructured/vectorization.py
+++ b/python/dune/codegen/blockstructured/vectorization.py
@@ -315,8 +315,8 @@ def add_vcl_access(knl, inner_iname, vcl_size, level=0):
         knl_with_subst_insns = knl_with_subst_insns.copy(substitutions=new_subst)
 
     knl_with_subst_insns = lp.expand_subst(knl_with_subst_insns, Iname(inner_iname))
-    knl = knl.copy(instructions=knl_with_subst_insns.instructions +
-                                [insn for insn in knl.instructions if insn.id not in knl_with_subst_insns.id_to_insn])
+    knl = knl.copy(instructions=knl_with_subst_insns.instructions + [insn for insn in knl.instructions
+                                                                     if insn.id not in knl_with_subst_insns.id_to_insn])
 
     # add store and load dependencies and set right accumulation assignee
     new_insns = []
@@ -473,8 +473,8 @@ def realize_tail(knl, inner_iname, outer_iname, outer_bound, tail_iname, vcl_siz
 
     additional_inames_to_duplicate = frozenset()
     for insn in insns_to_duplicate:
-        additional_inames_to_duplicate = additional_inames_to_duplicate | \
-                                         ((insn.within_inames | insn.reduction_inames()) - common_inames)
+        additional_inames_to_duplicate = additional_inames_to_duplicate | ((insn.within_inames |
+                                                                            insn.reduction_inames()) - common_inames)
 
     knl = lp.duplicate_inames(knl, tuple(additional_inames_to_duplicate),
                               Or(tuple((Id(insn.id) for insn in new_insns))))