diff --git a/tests/Makefile.am b/tests/Makefile.am
index f53e534ac..bcc8c87b0 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -449,12 +449,19 @@ observation_trends_and_prefiltering/ML/Trend_loglinear_no_prefilter.m.trs: obser
 observation_trends_and_prefiltering/ML/Trend_loglinear_no_prefilter.o.trs: observation_trends_and_prefiltering/ML/Trend_no_prefilter.o.trs
 
 observation_trends_and_prefiltering/MCMC/Trend_no_prefilter_first_obs_MC.m.trs: observation_trends_and_prefiltering/MCMC/Trend_loglinear_no_prefilter_MC.m.trs
+observation_trends_and_prefiltering/MCMC/Trend_no_prefilter_first_obs_MC.o.trs: observation_trends_and_prefiltering/MCMC/Trend_loglinear_no_prefilter_MC.o.trs
 observation_trends_and_prefiltering/MCMC/Trend_no_prefilter_MC.m.trs: observation_trends_and_prefiltering/MCMC/Trend_no_prefilter_first_obs_MC.m.trs
+observation_trends_and_prefiltering/MCMC/Trend_no_prefilter_MC.o.trs: observation_trends_and_prefiltering/MCMC/Trend_no_prefilter_first_obs_MC.o.trs
 observation_trends_and_prefiltering/MCMC/Trend_loglinear_prefilter_MC.m.trs: observation_trends_and_prefiltering/MCMC/Trend_no_prefilter_MC.m.trs
+observation_trends_and_prefiltering/MCMC/Trend_loglinear_prefilter_MC.o.trs: observation_trends_and_prefiltering/MCMC/Trend_no_prefilter_MC.o.trs
 observation_trends_and_prefiltering/MCMC/Trend_loglin_prefilt_first_obs_MC.m.trs: observation_trends_and_prefiltering/MCMC/Trend_loglinear_prefilter_MC.m.trs
+observation_trends_and_prefiltering/MCMC/Trend_loglin_prefilt_first_obs_MC.o.trs: observation_trends_and_prefiltering/MCMC/Trend_loglinear_prefilter_MC.o.trs
 observation_trends_and_prefiltering/MCMC/Trend_prefilter_first_obs_MC.m.trs: observation_trends_and_prefiltering/MCMC/Trend_loglin_prefilt_first_obs_MC.m.trs
+observation_trends_and_prefiltering/MCMC/Trend_prefilter_first_obs_MC.o.trs: observation_trends_and_prefiltering/MCMC/Trend_loglin_prefilt_first_obs_MC.o.trs
 observation_trends_and_prefiltering/MCMC/Trend_prefilter_MC.m.trs: observation_trends_and_prefiltering/MCMC/Trend_prefilter_first_obs_MC.m.trs
+observation_trends_and_prefiltering/MCMC/Trend_prefilter_MC.o.trs: observation_trends_and_prefiltering/MCMC/Trend_prefilter_first_obs_MC.o.trs
 observation_trends_and_prefiltering/MCMC/Trend_loglin_no_prefilt_first_obs_MC.m.trs: observation_trends_and_prefiltering/MCMC/Trend_prefilter_MC.m.trs
+observation_trends_and_prefiltering/MCMC/Trend_loglin_no_prefilt_first_obs_MC.o.trs: observation_trends_and_prefiltering/MCMC/Trend_prefilter_MC.o.trs
 
 observation_trends_and_prefiltering/calib_smoother/Tr_no_prefil_f_obs_loglin_cal_smoother.m.trs: observation_trends_and_prefiltering/calib_smoother/Tr_no_prefilter_calib_smoother.m.trs
 observation_trends_and_prefiltering/calib_smoother/Tr_no_prefil_f_obs_loglin_cal_smoother.o.trs: observation_trends_and_prefiltering/calib_smoother/Tr_no_prefilter_calib_smoother.o.trs