diff --git a/debug-level-conf/chrony.conf b/debug-level-conf/chrony.conf
index 1f5787d..d2aaa94 100644
--- a/debug-level-conf/chrony.conf
+++ b/debug-level-conf/chrony.conf
@@ -15,9 +15,6 @@ refclock SHM 0 refid NMEA offset 0.000 precision 1e-6 poll 0 filter 3
 # trust means we trust this time. the NMEA will be kicked out as false ticker eventually, so we need to trust the combo
 refclock PPS /dev/pps0 refid PPS lock NMEA offset 0.0 poll 3 trust
 
-# enable RTC refclock
-# refclock PHC /dev/rtc0 poll 2 offset 0
-
 # also enable logging by uncommenting the logging line
 log tracking measurements statistics