diff --git a/python/dune/perftool/pdelab/localoperator.py b/python/dune/perftool/pdelab/localoperator.py
index 15184288c738194070432a197eed39ce1f1a0ec3..c5261439602729053fc2db671e42c05f612246a5 100644
--- a/python/dune/perftool/pdelab/localoperator.py
+++ b/python/dune/perftool/pdelab/localoperator.py
@@ -526,6 +526,7 @@ def extract_kernel_from_cache(tag, name, signature, wrap_in_cgen=True, add_timin
                          options=opt,
                          silenced_warnings=silenced,
                          name=name,
+                         lang_version=(2018, 1),
                          )
 
     from loopy import make_reduction_inames_unique
@@ -682,6 +683,9 @@ def cgen_class_from_cache(tag, members=[]):
     signature = "{}({})".format(basename, ", ".join(next(iter(p.generate(with_semicolon=False))) for p in constructor_params))
     constructor = LoopyKernelMethod([signature], constructor_knl, add_timings=False, initializer_list=il)
 
+    from loopy import get_one_scheduled_kernel
+    constructor_knl = get_one_scheduled_kernel(constructor_knl)
+
     # Take any temporary declarations from the kernel and make them class members
     target = DuneTarget()
     from loopy.codegen import CodeGenerationState