diff --git a/cw/waverunner.py b/cw/waverunner.py
index 63bdcf11e..bc602ce66 100755
--- a/cw/waverunner.py
+++ b/cw/waverunner.py
@@ -28,10 +28,10 @@ def __exit__(self, exc_type, exc_val, exc_tb):
 class WaveRunner:
     """Class for capturing traces using a WaveRunner oscilloscope.
 
-    This class can be used to operate the oscilloscope in sequence mode. The 
-    configuration can be done manually and loaded from a file using provided 
-    functions. In sequence mode, the oscilloscope captures a total of 
-    `num_segments` waves each starting at a trigger event. This is much more 
+    This class can be used to operate the oscilloscope in sequence mode. The
+    configuration can be done manually and loaded from a file using provided
+    functions. In sequence mode, the oscilloscope captures a total of
+    `num_segments` waves each starting at a trigger event. This is much more
     efficient than sending a separate command for each wave.
 
     This class is only tested with WaveRunner 9104 series.
@@ -53,7 +53,7 @@ class WaveRunner:
     >>>     waves = waverunner.capture_and_transfer_waves()
     >>>     ...
 
-    The class also provides a default configuration through functions. Then, 
+    The class also provides a default configuration through functions. Then,
     the trigger and power signals must be connected to channels 2 and 3. Note
     that the configuration is through hard-coded parameters in this file!