diff --git a/lisainstrument/instrument.py b/lisainstrument/instrument.py
index f5ae4cde84da6aaa0800890594b2c7684f360fc8..1d2245cc76ba83f99d1c0e753e2c1896d0ff997f 100755
--- a/lisainstrument/instrument.py
+++ b/lisainstrument/instrument.py
@@ -1753,6 +1753,7 @@ class Instrument:
                 logger.debug("Writing clock noise to '%s'", output)
                 self.clock_noise_offsets.write(hdf5, 'clock_noise_offsets')
                 self.clock_noise_fluctuations.write(hdf5, 'clock_noise_fluctuations')
+                self.clock_noise_fluctuations_withinitial.write(hdf5, 'clock_noise_fluctuations_withinitial')
 
                 logger.debug("Writing modulation noise to '%s'", output)
                 self.modulation_noises.write(hdf5, 'modulation_noises')
@@ -1797,6 +1798,7 @@ class Instrument:
 
                 logger.debug("Writing local timer deviations to '%s'", output)
                 self.local_timer_deviations.write(hdf5, 'local_timer_deviations')
+                self.local_timer_deviations_withinitial.write(hdf5, 'local_timer_deviations_withinitial')
 
                 logger.debug("Writing tilt-to-length couplings to '%s'", output)
                 self.local_ttls.write(hdf5, 'local_ttls')