diff --git a/debug-level-conf/chrony.conf b/debug-level-conf/chrony.conf
index 22f205e..bf94da8 100644
--- a/debug-level-conf/chrony.conf
+++ b/debug-level-conf/chrony.conf
@@ -16,7 +16,7 @@ refclock SHM 0 refid NMEA offset 0.000 precision 1e-3 poll 0 filter 3
 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
+refclock PHC /dev/rtc poll 2 offset 0
 
 # also enable logging by uncommenting the logging line
 log tracking measurements statistics