diff --git a/artiq/coredevice/suservo.py b/artiq/coredevice/suservo.py
index 96fd1e487..956950380 100644
--- a/artiq/coredevice/suservo.py
+++ b/artiq/coredevice/suservo.py
@@ -258,10 +258,10 @@ class Channel:
         This method does not advance the timeline. Output RF switch setting
         takes effect immediately and is independent of any other activity
         (profile settings, other channels). The RF switch behaves like
-        :class:`artiq.coredevice.ttl.TTLOut`. RTIO event replacement is supported. IIR updates take place
-        once the RF switch has been enabled for the configured delay and the
-        profile setting has been stable. Profile changes take between one and
-        two servo cycles to reach the DDS.
+        :class:`artiq.coredevice.ttl.TTLOut`. RTIO event replacement is
+        supported. IIR updates take place once the RF switch has been enabled
+        for the configured delay and the profile setting has been stable.
+        Profile changes take between one and two servo cycles to reach the DDS.
 
         :param en_out: RF switch enable
         :param en_iir: IIR updates enable