diff --git a/tests/Makefile.am b/tests/Makefile.am
index 6fce62bf7..487547ed5 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -275,7 +275,7 @@ MODFILES = \
 	optimizers/fs2000_w.mod \
 	differentiate_forward_vars/RBC_differentiate_forward.mod \
 	TeX/fs2000_corr_ME.mod \
-	prior_posterior_function/fs2000_prior_posterior_function.mod
+	prior_posterior_function/fs2000_prior_posterior_function.mod \
 	observation_trends_and_prefiltering/MCMC/Trend_loglin_no_prefilt_first_obs_MC.mod \
 	observation_trends_and_prefiltering/MCMC/Trend_loglin_prefilt_first_obs_MC.mod \
 	observation_trends_and_prefiltering/MCMC/Trend_loglinear_no_prefilter_MC.mod \