diff --git a/python/dune/perftool/pdelab/driver/timings.py b/python/dune/perftool/pdelab/driver/timings.py
index b7cbaa9c4321531165d55f6cfa9df19c9dc18589..4ba2d8318de885030240adabcf3e9e139bb20524 100644
--- a/python/dune/perftool/pdelab/driver/timings.py
+++ b/python/dune/perftool/pdelab/driver/timings.py
@@ -134,11 +134,11 @@ def apply_jacobian_timer():
 
     if is_linear():
         declaration = ["{} j({});".format(t_v, v), "j=0.0;"]
-        evaluation =  ["{}.jacobian_apply({}, j);".format(n_go, v),]
+        evaluation = ["{}.jacobian_apply({}, j);".format(n_go, v)]
     else:
         declaration = ["{} j0({});".format(t_v, v), "j0=0.0;",
                        "{} j1({});".format(t_v, v), "j1=0.0;"]
-        evaluation =  ["{}.nonlinear_jacobian_apply({}, j0, j1);".format(n_go, v),]
+        evaluation = ["{}.nonlinear_jacobian_apply({}, j0, j1);".format(n_go, v)]
 
     if get_option('instrumentation_level') >= 2:
         evaluation = ["HP_TIMER_START(apply_jacobian);"] + evaluation + ["HP_TIMER_STOP(apply_jacobian);", "DUMP_TIMER({}, apply_jacobian, {}, true);".format(get_option("instrumentation_level"), timestream)]