diff --git a/python/dune/perftool/pdelab/localoperator.py b/python/dune/perftool/pdelab/localoperator.py
index 7fe95bbe858be0aa74df2c313ad6bd96a7507e68..549cd30cbf2fce97e3f071bf428f14bd4e447e31 100644
--- a/python/dune/perftool/pdelab/localoperator.py
+++ b/python/dune/perftool/pdelab/localoperator.py
@@ -1026,13 +1026,19 @@ def generate_localoperator_kernels(operator):
 
 
 def generate_localoperator_file(kernels, filename):
+    logger = logging.getLogger(__name__)
+
     operator_methods = []
     for k in kernels.values():
         operator_methods.extend(k)
 
     # Generate all the realizations of sum factorization kernel objects needed in this operator
+    sfkernels = [sf for sf in retrieve_cache_items("kernelimpl")]
+    if sfkernels:
+        logger.info("generate_localoperator_kernels: Create {} sumfact kernel realizations".format(len(sfkernels)))
+
     from dune.perftool.sumfact.realization import realize_sumfact_kernel_function
-    for sf, qp in retrieve_cache_items("kernelimpl"):
+    for sf, qp in sfkernels:
         from dune.perftool.sumfact.tabulation import set_quadrature_points
         set_quadrature_points(qp)
         operator_methods.append(realize_sumfact_kernel_function(sf))