diff --git a/doc/manual/getting_started_core.rst b/doc/manual/getting_started_core.rst
index 8671f62c3..49f850cfe 100644
--- a/doc/manual/getting_started_core.rst
+++ b/doc/manual/getting_started_core.rst
@@ -95,6 +95,7 @@ Create a new file ``rtio.py`` containing the following: ::
 
     from artiq import *
 
+
     class Tutorial(EnvExperiment):
         def build(self):
             self.attr_device("core")
@@ -115,6 +116,7 @@ Try reducing the period of the generated waveform until the CPU cannot keep up w
 
     from artiq.coredevice.runtime_exceptions import RTIOUnderflow
 
+
     def print_underflow():
         print("RTIO underflow occured")
 
diff --git a/examples/master/repository/speed_benchmark.py b/examples/master/repository/speed_benchmark.py
index d2084d243..6face8d55 100644
--- a/examples/master/repository/speed_benchmark.py
+++ b/examples/master/repository/speed_benchmark.py
@@ -115,7 +115,6 @@ class SpeedBenchmark(EnvExperiment):
                         (end_time-start_time)/self.nruns,
                         realtime=True)
 
-
     def run(self):
         if self.mode == "Single experiment":
             self.run_without_scheduler(False)