diff --git a/src/cosmology.c b/src/cosmology.c
index 4718ed5b316e514476e3ec38dd8771136f3a2f69..d6d389842455f2447facbae26970ab04c506d99b 100644
--- a/src/cosmology.c
+++ b/src/cosmology.c
@@ -576,6 +576,8 @@ void cosmology_init_no_cosmo(struct cosmology *c) {
   c->a_dot = 0.;
   c->time = 0.;
   c->universe_age_at_present_day = 0.;
+  c->Hubble_time = 0.;
+  c->Lookback_time = 0.;
 
   /* Initialise the interpolation tables */
   c->drift_fac_interp_table = NULL;